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Packaging sells. This is not just a marketing phrase, but the reality of purchasing behaviour. Research repeatedly shows that packaging design influences the perception of the product, the brand, the value and even the actual purchase intention. A systematic review of 221 scholarly articles on the relationship between packaging design and purchase intention describes packaging as a multidimensional tool that influences customer decision-making, brand perception and product value. Research focused directly on cosmetics has also shown that visual elements of cosmetic packaging influence consumers’ purchase decisions (Humanities and Social Sciences Communications, Glasgow Caledonian University – The effect of cosmetics packaging design on consumers' purchase decisions).
For cosmetics this is even more pronounced. The customer often does not buy only a cream, serum or shampoo. They also buy a feeling of cleanliness, efficacy, softness, luxury, naturalness or professionalism. Packaging is the first thing that creates this feeling.
But for cosmetics it is not enough for the packaging to look good. It also has to work. And this is precisely where many brands and customers get lost. Should a cream be packed in a jar or an airless bottle? Choose plastic or glass? When is PET suitable and when HDPE? Why is it hard to get a viscous product out of some bottles? Why can a beautiful bottle be a problem when labelling? And why does the closure sometimes decide whether the customer loves the product or stops using it?
“Packaging is not just design. It is a technical, practical and commercial decision.”
Good packaging has to do several things at once. It is not just a label on the product or an aesthetic accessory. It is a functional part of the product that decides whether the customer gets what they paid for.
A good formula in bad packaging quickly loses points. The customer does not have to remember that the emulsion was excellently formulated. They will remember that the pump did not work, the bottle was slippery, the serum ran down the neck or that the last third of the product could not be taken out of the packaging.
Packaging is not chosen according to which is the most beautiful in the catalogue. It is chosen according to the product and its properties — viscosity, pH, oil content, alcohol content, surfactant content, fragrance or essential oils, light sensitivity, air sensitivity, method of use, hygiene during application, label size, transport and storage.
In practice this means that the same packaging is not suitable for everything. A few common examples where appearance and function diverge:
Packaging is therefore not the final decoration. It is a part of the product.
Each material has advantages and limits. There is no single best material for everything. The right choice depends on the formula, the way it is used, the price, logistics, design and sustainability.
HDPE stands for High-Density Polyethylene. In cosmetics it is one of the very practical packaging materials, especially where durability, flexibility and functionality are important.
HDPE packs are often milky, matt or opaque. They may not look as premium as glass or clear PET, but from a practical point of view they are often a very good solution.
Practical takeaway: HDPE is a workhorse type of packaging. It does not always win on a luxurious first impression, but often wins in everyday use. If a product needs to work in the shower, in the hand, with frequent use and without unnecessary risk of breakage, HDPE can be a very sensible choice.
PET stands for Polyethylene Terephthalate. In cosmetics it is popular mainly because it can be clear, light, strong and visually clean.
If you want to show the colour of the product, the gel texture, a pearlescent effect or a transparent content, PET is often more suitable than HDPE.
Practical takeaway: PET is a good compromise between appearance and practicality. It works very well for many products, but for thicker formulations you need to think about bottle shape, material flexibility and type of closure.
Glass has a strong place in cosmetics. It feels valuable, stable and premium. It is often used for serums, oils, perfumes or products where a higher visual standard is important.
Glass also provides a good barrier, and in dark variants it helps protect the contents from light. This is important especially for more sensitive oils, aromatic products or active ingredients.
Practical takeaway: glass is excellent when it makes sense for the product. For an oil serum or perfume oil it can be very suitable. For a large shampoo for the shower it may be more of a problem than an advantage.
Aluminium is used in cosmetics mainly for jars, tubes and some specific packaging solutions. It is light, opaque and protects the contents well from light.
However, it is not universal. For water-based or more reactive formulations you need to address internal coating and compatibility.
Practical takeaway: aluminium is a good pack for balms, ointments, butters and solid products. For water-based cosmetics or active formulations you need to be more cautious.
The four most common materials in cosmetic packaging side by side. None of them is the best at everything. Each has its place if you assign it according to the product type, not the aesthetic impression.
Compatibility means that the packaging and the product work together. The packaging material must not degrade the formula and the formula must not damage the packaging.
Problems can be caused especially by:
When it comes to packaging a simple shortcut is often used: glass is eco-friendly, plastic is bad. In reality it is more complicated. Plastic is not automatically a bad choice. Glass is not automatically an environmental win.
HDPE can be far more practical than glass for a shower gel. PET can be more sensible than glass for a larger bottle of tonic or shampoo. Glass can be excellent for an oil serum in a smaller volume. Aluminium can make sense for a balm.
Sustainability is not a material label. It is the sum of decisions:
“The worst packaging is not plastic or glass. The worst packaging is the one that is not suitable for the specific product.”
The shape of the packaging is not only about aesthetics. It affects how the product is held, dosed, stored, labelled and used.
The practical rule is simple: we do not choose the bottle shape only according to what looks good in a photo. We choose it according to whether it can be held, stood up, squeezed, labelled and used.
The closure is where the product meets the customer’s hand. If it does not work, the customer notices immediately.
When you combine material, bottle shape and closure, you get a pack that either fits the product or does not. Here is a quick map for the most common cosmetics types.
Suitable packs: dark glass, glass with pipette, dropper, roll-on or compatible plastic depending on composition.
Important: protection from light, compatibility with oils and fragrance, precise dosing.
Suitable packs: airless, pump, suitable plastic or glass depending on formulation.
Important: hygiene, protection from contamination, pH, stability of active ingredients.
Suitable packs: PET, glass, sprayer or flip top depending on application method.
Important: type of sprayer, preservation, protection from contamination.
Suitable packs: PET or HDPE.
Important: safety in the shower, squeezability, closure, viscosity.
Suitable packs: pump, airless, tube, jar depending on viscosity.
Important: dosing, hygiene, ability to get the product out without a fight.
Suitable packs: jar or wide neck.
Important: particles, thickness, scooping, contact with water in the bathroom.
Suitable packs: aluminium jars, glass or plastic jars, sticks.
Important: firmness, way of scooping, protection from heat.
Suitable packs: mainly HDPE.
Important: chemical resistance, safe handling, secure closure.
Packaging in Europe is gradually coming under more pressure. It is not enough for it to be nice and sellable. It will be increasingly important whether it is designed to be recyclable, sortable, labelled and used without unnecessary waste.
The aim of the new rules is to reduce the amount of packaging waste, support the circular economy and improve the recyclability of packaging. The European Commission states that the goal is for all packaging on the EU market to be recyclable in an economically viable way by 2030.
For cosmetics this practically means that there will be more focus on:
This does not mean that all cosmetic packs will be the same or boring. It means that design will have to better respect the reality of recycling, sorting and material responsibility.
Mono-material means that the pack or its main parts are made as far as possible from one type of material. The aim is to simplify sorting and recycling.
In cosmetics this is important because the pack is often not just a single bottle. It may contain:
The more different materials a pack contains, the more complex its sorting and recycling can be.
PET bottle, compatible plastic closure and a label that does not complicate sorting.
Glass bottle, plastic pump, metal spring, decorative label and plastic shrink wrap.
The more complex solution is not automatically bad. Sometimes it has a good reason, for example protection of a more sensitive formulation or better hygiene during use. But it should have a reason. Not just look more expensive.
With packaging it is easy to slip into general statements. These are, however, increasingly insufficient. It is better to speak concretely.
Before choosing packaging it is worth asking a few practical questions. They are boring but save many bad decisions.
“The best packaging is not the prettiest one. The best packaging is the one that fits the formula, the way of use and the customer.”
Packaging sells, but good packaging does more than just give a good first impression. It protects the formula, helps with dosing, reduces the risk of contamination, carries the label, withstands the bathroom, transport and real-life use. Material, bottle shape, closure and way of labelling are not details. They are decisions that affect product quality and customer experience.
Therefore, the question is not only: “Does this packaging look good?” A better question is: “Does this packaging make sense for this specific product?” If yes, the design can sell. If not, the pack will sooner or later become a problem.
An important part of the pack is also the label. It carries mandatory information, ingredients, warnings, symbols, claims and everything the customer needs to know before using the product. That is why we will cover it separately in further articles.
Article for manufacturers about what a cosmetic label must contain, how to work with the ingredients list, allergens, PAO, batch, nominal content, certifications and claims.
Article for customers about how to navigate ingredients, claims, fragrance, allergens, certifications and marketing statements without unnecessary fearmongering and without naivety.
PET is clear and rigid, shows the colour and texture of the product well, but is less squeezable. HDPE is more matt and flexible, easier to squeeze and withstands dropping better. With the same shampoo, PET gives a more premium appearance, HDPE more practical use in the shower.
Many plant oils and active ingredients are sensitive to light. Dark glass (amber, blue, violet) filters part of the light spectrum and helps slow down oxidation. For oil serums in smaller volumes this is a common and proven standard.
No. Glass is heavier, which increases transport load and emissions. Plastic is lighter, but more demanding in terms of sorting and recycling. The environmental balance of a pack depends on its whole life cycle — from production, transport and use to sorting. The most eco-friendly packaging is the one that fits the product and the customer uses it up.
An airless pack makes sense for active creams and serums that are sensitive to air, oxidation or contamination from fingers. The trade-off is a higher purchase cost and often more complex recycling, so it is not used for ordinary products without special requirements.
Most often because of incorrect compatibility between pump and product: too thick a consistency, particles, crystallising components or an unsuitable valve type. For a new product the pump is therefore tested with the real formula, not only according to the catalogue.
PPWR (EU 2025/40) will apply from 12 August 2026. For cosmetics it will mean more emphasis on recyclability, mono-material packs, minimising packaging waste and clearer labelling. The EU’s goal is for all packaging to be recyclable in an economically viable way by 2030.
