Packaging does more than make a cosmetic product look appealing on a shelf. It also helps protect the formulation inside.
The right container needs to store the product safely, prevent unnecessary exposure to light and air where needed, and provide enough space for mandatory labelling and regulatory information. Choosing the wrong packaging can affect product stability, shorten shelf life, or create compliance issues further down the line.
Glass is often the preferred material for cosmetics because it is chemically stable and unlikely to react with the ingredients it contains. However, not all glass performs in the same way.
Different glass types offer varying levels of chemical resistance, UV protection, durability, and cost, which can all influence how well a formulation is preserved over time.
This guide explores the types of glass commonly used in cosmetic packaging, the safety standards that apply in the UK, what sustainability claims really mean in practice, and the factors worth considering when choosing a supplier.
Why Glass is Commonly Used in Cosmetic Packaging
Glass has remained a popular choice for skincare, serums, and premium cosmetics for 3 main reasons.
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Chemical Stability
Glass is highly resistant to reacting with most cosmetic ingredients under normal storage conditions. This makes it particularly suitable for formulations containing active ingredients, such as vitamin C, retinoids, and exfoliating acids, where packaging compatibility plays an important role in maintaining product quality over time.
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Barrier Protection
Unlike some packaging materials, glass does not allow gases to pass through it. It can also help protect formulations from light exposure when coloured glass is used. Amber glass, for example, is often chosen for products containing ingredients that are sensitive to UV light, helping to support product stability throughout its shelf life.
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Premium Presentation
Packaging influences how customers perceive a product, and glass is often associated with quality. Its weight, clarity, and appearance make it a popular option for serums, facial oils, and other skincare products positioned at the premium end of the market.
Keep in mind, glass isn't perfect. Shipping can cost a little more because of the extra weight, and good protective packaging is essential to minimise breakages.
For many brands, those considerations are worth it for the premium look and product protection glass offers. It really comes down to what matters most for your formulation, budget, and customer experience.
Types of Glass Used in Cosmetic Packaging
Not all cosmetic glass performs in the same way. Different glass types offer varying levels of chemical resistance, durability, UV protection, and cost, which can influence how well a formulation is preserved over time.
Soda Lime Glass (Type III)
Soda lime glass is the type you'll see most often in cosmetic packaging. It's clear, durable, and relatively affordable to produce, which is why many skincare brands choose it.
It works well for everyday products such as moisturisers, cleansers, toners, facial oils, and liquid foundations. For most formulations, it offers a practical balance between performance, appearance, and cost.
Treated Soda Lime Gloass (Type II)
Type II glass starts out as regular soda lime glass but is given a special treatment to make the inside surface more resistant to chemical interactions.
It's more commonly used in pharmaceutical packaging, but it can also be a good option for cosmetic products that need a little more protection than standard soda lime glass can provide.
Borosilicate Glass (Type I)
Borosilicate glass is the most chemically resistant of the three. It handles temperature changes well and is less likely to interact with the ingredients inside the bottle.
Because of that, it's often used for formulas with potent active ingredients, such as vitamin C serums, retinoids, or exfoliating acids, where maintaining product stability over time is especially important.
The main consideration is cost. Borosilicate glass is usually more expensive to manufacture and isn't as widely available as standard glass packaging, so custom orders can sometimes take longer to source.
Amber and Coloured Glass
The colour of a bottle isn't only an aesthetic decision. It can also play a role in protecting certain formulations.
Amber glass is commonly used for products containing ingredients that are sensitive to light exposure, including vitamin C, retinol, and some botanical extracts. By reducing the amount of UV light reaching the formulation, amber glass can help support product stability throughout its shelf life.
Blue, green, and other coloured glass options are also available, although they are often selected primarily for branding and visual appeal.
Frosted and Decorative Finishes
Frosting is a treatment applied to the outside of the bottle and doesn't change the glass's underlying chemical properties.
A frosted clear bottle performs the same as an unfrosted clear bottle, while a frosted amber bottle retains the same UV protective characteristics as standard amber glass.
As a result, frosting is usually a design decision rather than a formulation requirement, allowing brands to enhance the look and feel of a product without affecting packaging performance.
Choosing the Right Glass Format by Product Type
Selecting the right glass type is only part of the decision. The dispensing format matters just as much, and it's often where newer brands run into difficulties.
Dropper or Airless Pump: Which one is Better for a Serum?
This is one of the most common packaging questions in skincare, and the answer depends largely on the formulation.
Dropper bottles remain popular for facial oils, serums, and concentrated treatments. They're easy to use, highly recyclable, and allow customers to see exactly how much product they're applying.
However, the downside is that each time the pipette is removed, air enters the bottle. For formulations containing ingredients that are particularly sensitive to oxidation, such as vitamin C or retinol, repeated exposure to air may affect long-term stability. There’s also a small risk of contamination if the pipette touches the skin before being returned to the bottle.
If you're considering glass dropper bottles, our Glass Dropper Bottles: The Complete UK Buyer's Guide covers everything you need to know.
On the other hand, airless pumps can help minimise contact between the product and air during use. This can make them a good option for formulations where preserving ingredient stability is a priority. However, airless packaging is often more expensive, may require higher minimum order quantities, and offers fewer true glass options than standard dropper bottles.
Can Glass Be Used in Airless Packaging?
Yes, but true glass airless bottles are still relatively uncommon.
Many products marketed as "glass look" airless packaging actually use high clarity plastics, such as PETG or SAN, because they are easier to manufacture with the precision required for airless mechanisms.
Brands looking for a genuine glass airless solution should expect fewer stock options, longer lead times, and potentially higher costs than conventional glass bottles.
Jars, Bottles, Vials, and Atomisers: What’s the Difference?
The choice of container affects not only how a product looks, but also how it is dispensed, stored, and exposed to air.
Jars are best suited to thicker creams, balms, and masks that need to be scooped. The downside is that opening the jar exposes the entire product surface to air and repeated contact with fingers, which may not be ideal for formulations containing sensitive active ingredients.
Dropper bottles work well for lightweight oils, serums, and concentrates where controlled dispensing is important.
Pump bottles are often used for lotions, gel cleansers, and emulsions. They provide more consistent dosing and generally expose the formulation to less air than jars.
Vials are typically used for highly concentrated treatments, ampoules, or sample sizes where precise dosing and product protection are priorities.
Atomisers and spray bottles are commonly used for facial mists, toners, and setting sprays. They distribute product evenly but are less suitable for formulations that require precise dosage control.
Matching Packaging to Product Type
As a general guide:
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Vitamin C serums and retinol treatments → Amber glass with a dropper or airless pump
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Facial oils and botanical blends → Amber or clear dropper bottles, depending on light sensitivity
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Moisturisers and gel cleansers → Pump bottles in clear or coloured soda lime glass
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Balms and thick creams → Wide mouth glass jars
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Concentrated treatments and ampoules → Small glass vials
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Facial mists and toners → Spray bottles or atomisers, with amber glass considered where formulations are light-sensitive
Ultimately, the best packaging choice depends on the formulation, how customers are expected to use the product, and the level of protection required to maintain product stability over time.
UK Safety and Regulatory Standards for Cosmetic Glass Packaging
Choosing the right glass bottle isn't only about appearance or product stability. If you're selling cosmetics in Great Britain, your packaging also needs to support compliance with UK cosmetic regulations.
While glass itself isn't heavily regulated in the same way ingredients are, the container you choose affects safety assessments, labelling, traceability, and the information you'll need to provide to regulators.
There are 5 things to keep in mind.
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Cosmetic Products Must be Assesed Before Sale
Before a cosmetic product can be placed on the GB market, it must undergo a safety assessment carried out by a suitably qualified safety assessor. The assessment forms part of a Cosmetic Product Safety Report (CPSR), which is then included within a wider Product Information File (PIF).
The PIF must be kept for 10 years after the last batch of the product has been made available on the market and should be readily accessible if requested by enforcement authorities. It typically contains:
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The Cosmetic Product Safety Report (CPSR)
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Product composition details
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Manufacturing information
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Evidence supporting product claims
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Stability and compatibility data
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Information relating to packaging materials where relevant
This is one reason glass remains popular for cosmetic products. Glass is generally considered a stable, non reactive packaging material, which can simplify compatibility assessments, particularly for formulations containing active ingredients such as vitamin C, retinoids, botanical extracts, or exfoliating acids.
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Responsible Person and Labelling
Every cosmetic product sold in Great Britain must have a Responsible Person (RP) established in the UK. This can be:
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The manufacturer
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The importer or
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A company formally appointed to act on behalf of the brand
The Responsible Person carries significant legal responsibilities. They are expected to:
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Ensure the product is safe
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Maintain an up to date Product Information File
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Verify that packaging and labelling meet regulatory requirements
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Notify products before sale
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Report serious undesirable effects where necessary
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Substantiate marketing claims
For brands selling in both the UK and EU, it's worth noting that a UK Responsible Person cannot automatically fulfil the same role for the European market, and vice versa. Since Brexit, the two systems operate separately, even though many of the underlying requirements remain similar.
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Products Must Be Notified Through SCPN
Before a cosmetic product can be supplied to consumers in Great Britain, it must be notified through the Submit Cosmetic Product Notifications (SCPN) service operated by the UK's Office for Product Safety and Standards (OPSS). This replaced the EU's CPNP system for products placed on the GB market.
Brands typically need information such as:
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Product category
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Formulation details
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Responsible Person information
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Packaging images
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Labelling details
Completing notification early in the launch process can help avoid delays once products are ready for sale.
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Labelling Requirements Affect Packaging Decisions
UK cosmetic regulations require certain information to appear clearly and indelibly on the container and/or outer packaging.
This generally includes:
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Name and address of the Responsible Person
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Country of origin (for imported products)
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Nominal weight or volume
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Batch number
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Product function
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Ingredient list using INCI names
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Usage precautions
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Either a Best Before Date or Period After Opening (PAO) symbol
For smaller bottles, fitting all of this information onto the primary container can become challenging.
Products under 5ml or 5g may qualify for certain labelling exemptions because there's only so much information you can fit on a tiny bottle. That's why many brands use cartons, peel and reveal labels, or enclosed leaflets to provide the remaining details. When information is supplied separately, the packaging must include the hand and book symbol to let consumers know where to find it.
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Why Packaging Choice Matters for Compliance
Packaging doesn't need to be pharmaceutical grade to be suitable for cosmetics, but it should support the safety and stability of the formulation.
For example:
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Vitamin C serums often benefit from amber glass to help reduce light exposure.
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Retinol products may require packaging that minimises oxidation.
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Water-based cleansers and moisturisers generally have fewer compatibility concerns and can often be packaged in standard soda-lime glass.
Ultimately, regulators assess the safety of the finished cosmetic product as a whole. Choosing packaging that aligns with your formulation, filling process, and labelling requirements can make preparing your CPSR, compiling your PIF, and launching your product considerably smoother.
Is Glass Packaging Sustainable? What Comsetic Brands Should Know
Glass is often described as the sustainable packaging option, but the reality is more nuanced than simply saying glass is "better" than plastic.
Like any packaging material, glass has advantages and trade offs. Understanding both can help brands make more informed decisions and communicate sustainability claims more credibly.
Why Glass Is Often Considered a Sustainable Choice
One of glass's biggest strengths is recyclability. Glass can be recycled repeatedly without losing quality, meaning used bottles can be collected, remelted, and turned into new containers again and again.
Using recycled glass, known as cullet, can also reduce the amount of virgin raw materials needed and lower the energy required during manufacturing, since recycled glass melts at a lower temperature than newly sourced materials.
Glass also performs well from a product safety perspective. It is chemically stable, highly resistant to reacting with most cosmetic ingredients, and does not typically release substances into the formulations it contains. For brands producing skincare products with active ingredients, this can be just as important as the environmental benefits.
Where Glass Has Environmental Trade Offs
Glass isn't impact free. It's much heavier than plastic, so transporting empty bottles to manufacturers and finished products to customers usually requires more energy. Making glass also takes a lot of energy because it has to be produced at very high temperatures.
That doesn't necessarily make glass a less sustainable choice. Its overall environmental impact depends on several factors, including how far it travels, how much recycled glass is used, how it's manufactured, and whether it's sourced locally.
For example, a bottle made with recycled glass and supplied within the UK may have a very different footprint from one that has been shipped long distances before being filled and distributed.
What This Means for Cosmetic Brands
For many cosmetic brands, glass remains a strong packaging choice because it combines excellent recyclability, good formulation compatibility, and a premium appearance that customers often associate with quality.
However, sustainability claims are most effective when they're supported by specific actions rather than relying on the material itself to tell the story.
Brands may wish to consider highlighting initiatives such as:
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Using packaging made with recycled glass content
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Sourcing bottles closer to their manufacturing or filling site to reduce transport distances
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Choosing lightweight glass formats where appropriate
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Encouraging customers to recycle or reuse packaging after use
At the end of the day, no packaging material is completely impact free. The most sustainable choice is often the one that protects the product, meets customer expectations, keeps transport practical, and can be responsibly recycled or reused at the end of its life.
How to Choose a Glass Packaging Supplier in the UK
Once you've decided on the right bottle type and dispensing format, choosing the right supplier becomes the next challenge.
Price matters, but it rarely tells the full story. Availability, technical support, documentation, and how easily you can reorder the same specification in the future often have a bigger impact once production is underway.
Before placing an order, here are 6 things we’d recommend doing:
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Ask About Supporting Documentation Early
If your product requires a Cosmetic Product Safety Report (CPSR), it's worth understanding what information your safety assessor may need before placing an order.
A good supplier should be able to provide:
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Material specifications
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Information on recycled content, where applicable
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Supporting documentation requested by safety assessors
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Details of any coatings, decorations, or treatments applied to the glass.
A supplier that understands cosmetic compliance requirements can often save time and make the process much smoother than one that only provides pricing and lead times.
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Treat Samples as Testing Tools
Samples aren't just there to check whether a bottle looks good.
They give you an opportunity to test how the packaging performs with your actual formulation before committing to a larger order.
Things you should check:
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Whether the closure seals securely
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How easily the product dispenses
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Label adhesion and presentation
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Compatibility with your filling process
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Whether the packaging can withstand storage and transit conditions
A serum with a low viscosity may behave very differently from a thicker facial oil, so testing with your finished formulation is usually more useful than trialling with water.
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Confirm Bottle and Closure Compatibility
Many packaging issues happen because bottles and closures are sourced separately without confirming that they'll work together.
Before ordering, check:
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Neck finish dimensions
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Closure compatibility
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Dip tube lengths for pump;
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Pipette sizes for dropper bottles
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Whether replacement components will remain available for future orders
Resolving these details early can help avoid delays during filling or product launch.
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Consider Stock Availability and Lead Times
For growing brands, lead times can be just as important as price.
Suppliers that hold stock within the UK can often provide samples more quickly, dispatch repeat orders faster, and reduce the uncertainty that sometimes comes with imported packaging.
If you're planning a launch, it's also worth asking whether stock levels fluctuate throughout the year and how far in advance repeat orders should be placed.
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Factor in Decoration Timelines
Decoration services such as screen printing, frosting, labelling, or custom closures often add extra steps to the production process.
In many cases, artwork approval takes longer than the decoration itself.
Allowing time for sampling, design revisions, and sign-off can help prevent delays further down the line, particularly if you're working toward a fixed launch date.
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Questions Worth Asking Before You Order
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Can you provide material specifications?
Useful for safety assessments and compliance documentation
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Are samples available?
Allow real world testing before committing to volume
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Are bottles and closures supplied as a compatible system?
Helps reduce leakage and fitment issues
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Is stock held in the UK?
Can shorten lead times and simplify reordering
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What are the lead times for decorated packaging?
Helps build a realistic launch schedule
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Are MOQs different for bottles, closures, and decoration?
Prevents surprises when placing larger orders
Choosing a packaging supplier isn't just about finding someone who can sell you bottles. It's about finding a partner who can support your product as it moves from development to launch and, ideally, continue supporting you as your production volumes grow.
If you're a startup looking for a glass bottle supplier, you can explore our recommendations in 5 Best Glass Bottle Suppliers for UK Startups.
The Closure Matters Too: Choosing the Right Caps, Pumps, and Droppers
When people think about packaging compatibility, most of the focus goes on the bottle itself. But in many cases, the closure is just as important.
After all, the dropper, pump, or cap is often the part that comes into direct contact with the formulation every time the product is used.
Dropper Closures
Dropper bottles are a popular choice for facial oils, serums, tinctures, and other concentrated formulations because they make it easy to dispense small, controlled amounts of product.
A standard dropper assembly typically includes:
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A cap
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A bulb
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A pipette and
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The glass bottle itself
The bulb material is worth paying attention to, especially if your formulation contains high concentrations of essential oils or active ingredients. Some ingredients can cause certain rubber materials to degrade, swell, or change over time, which is why suppliers often offer different bulb options to suit different formulations.
This is why it's always a good idea to discuss your formulation with your supplier or safety assessor before making a final packaging decision.
Pumps and Sprays
Pumps and spray closures are commonly used for lotions, cleansers, mists, and other products designed for hands free dispensing.
Even when paired with a glass bottle, most pumps and sprayers contain plastic components inside. This is standard across the packaging industry, as parts such as springs, pistons, and valves need materials that are durable, flexible, and able to withstand repeated use.
For brands looking to minimise the appearance of plastic, some closures are available with aluminium collars or bamboo style finishes. These can help achieve a more premium look while still relying on the internal components needed for consistent, reliable dispensing.
Standard Caps
Not every product needs a dispensing mechanism. Screw caps and tamper evident closures are often suitable for products that are poured, decanted, or used in professional settings where precise dosing isn't essential.
The key consideration is ensuring the cap is compatible with the bottle's neck finish and creates a secure seal during storage, transport, and everyday use.
Why Compatibility Matters
A bottle and closure might appear to fit together, but that doesn't necessarily mean they'll perform well with your formulation.
Before committing to a larger order, it's worth testing:
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Whether the closure seals securely
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How consistently the product dispenses
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Whether the pipette reaches the base of the bottle
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How the components perform during transit
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Whether the packaging remains stable over the product's intended shelf life.
For this reason, many brands prefer sourcing bottles, pipettes, pumps, and closures from the same supplier. It can simplify testing, reduce compatibility issues, and make repeat ordering easier as production volumes grow.
Frequently Asked Questions
Is glass packaging better than plastic for cosmetics?
There isn't a single answer for every product. Glass is often preferred for formulations containing active ingredients because it is highly chemically resistant and doesn't typically interact with the product.
On the other hand, plastic packaging can be lighter, less fragile, and may have a lower transport footprint depending on the supply chain.
The best option depends on the formulation, brand positioning, and sustainability goals.
What type of glass is used for skincare bottles?
Most skincare bottles are made from soda-lime (Type III) glass, which offers a good balance of durability, clarity, and affordability.
More chemically resistant borosilicate (Type I) glass may be used for highly concentrated or reactive formulations, although it is less commonly stocked for standard cosmetic packaging.
Do I need amber glass for my skincare product?
Only if your formulation is sensitive to light.
Ingredients such as vitamin C, retinol, essential oils, and certain botanical extracts can degrade when exposed to UV light, making amber glass a common choice.
More stable formulations may not require UV protection and can often be packaged in clear or decorative glass instead.
Are glass cosmetic bottles recyclable in the UK?
Yes. Glass is widely recycled throughout the UK and can be recycled multiple times without losing quality.
However, the environmental impact of glass packaging also depends on factors such as recycled content, transport distances, and manufacturing methods.
What's the difference between borosilicate and soda lime glass?
Soda lime glass is the standard material used for most cosmetic packaging because it’s cost effective, durable, and readily available.
Borosilicate glass offers greater chemical resistance and better tolerance to temperature changes, making it more suitable for formulations where packaging compatibility is a particular concern.
How do I know if a bottle and closure will work with my product?
The most reliable approach is to test samples using your finished formulation. This allows you to assess dispensing performance, sealing, label adhesion, and compatibility under real world conditions before committing to a larger production run.
Need Help Comparing Your Options?
Selecting cosmetic packaging involves more than choosing a bottle shape.
Compatibility, functionality, presentation, and supply reliability can all influence which packaging solution is right for your product.
If you're still weighing up your options, our team can help you compare suitable bottles, closures, and dispensing systems based on your formulation and production needs.
Click here to chat with our team and we'll help you find the right packaging for your product.
