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The eye edit: from brow fortification to under-eye brightening.
Targeted eye treatments. For a rested, strengthened gaze.

Targeted eye treatments. For a rested, strengthened gaze.

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Conservation

To prevent bacterial contamination and preserve the shelf life of cosmetic products, it is essential to store them properly. Here, learn the best practices that help protect these formulations.
Date de péremption cosmétique
Cosmetology
7 min of reading
How is the expiration date of a cosmetic product defined?

Cosmetic products, whether opened or not, have a limited lifespan. To protect consumers and limit the risk of skin reactions, it is mandatory for brands to indicate the shelf life of each product. How is this expiration date determined? Let's discover it together.

Date de péremption produits de protection solaire.
Sun care
3 min of reading
Can we reuse last summer's sunscreen?

From one year to the next, we tend to keep our sunscreens. When the summer season returns, we are tempted to reuse the barely used sunscreen from the previous year to avoid waste. But is this practice risk-free?

Durée de conservation d'un soin au squalane.
FAQ
3 min of reading
What is the shelf life of squalane?
Conserver ses huiles essentielles
Safety
3 min of reading
Essential Oil Storage for Keeping It for as Long as Possible.

Essential oils are volatile essences extracted from aromatic plants. They are liquid extracts containing a significant quantity of rich, complex active ingredients that degrade easily under the effect of light and heat. Here you'll find our advice on the best way to store essential oils.

crème hydratante visage insta
Cosmetology
3 min of reading
Expired Cosmetics and Makeup: What are the Risks?

All cosmetic products, including makeup, have an expiration date. Therefore, caution must be exercised during purchase to prevent skin problems. Storage must also be carried out rigorously to prevent their deterioration before the use-by date. Otherwise, what risks are you exposing yourself to? Discover all our advice on this subject.

FAQ about conservation

What are the main factors that affect the preservation of cosmetics?

Light, heat, humidity, and exposure to air are the main factors that can degrade cosmetics.

How long can an opened cosmetic product be kept?

The period after opening (PAO) of a cosmetic product varies from one product to another. It is generally indicated on the packaging.

How can you tell if a cosmetic product has expired?

A change in color, odor, or texture often indicates that a product is expired.

How can contamination of a cosmetic product be prevented?

To prevent the risk of bacterial contamination of a cosmetic product, it is recommended to use spatulas to take out the products and to always wash your hands before use.

Are cosmetics in pump bottles better preserved than those in jars?

Yes, pump bottles limit exposure to air and bacteria, thereby extending the shelf life of the products.

What is the PAO on a cosmetic product?

The PAO (Period After Opening) corresponds to the length of time during which a product remains safe and effective after being opened. It is represented by an open-jar symbol with a number of months.

Where should you store your cosmetic products?

In a dry place, protected from heat, light, and humidity. The bathroom is not always ideal because of its temperature fluctuations and high humidity levels.

Can you store your cosmetics in the refrigerator?

Some products can tolerate it, but it is not necessary for most of them. Very low temperatures can also alter certain textures.

Do solid cosmetics have better shelf life?

They contain less water, which limits microbial growth, but it is not always easy to keep them dry.

Does heat damage cosmetics?

Yes, it can accelerate the degradation of active ingredients and change the product’s texture. It can also reduce the effectiveness of preservatives.

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