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The eye edit: from brow fortification to under-eye brightening.
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  • Skin Diagnostic
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Sun protection

Sun protection plays a key role in preserving your skin’s health and appearance by blocking harmful UV rays. These rays cause photoageing, induce pigmented spots and increase the risk of skin cancer. Adopting suitable protection shields your skin from external stressors while preserving its radiance and elasticity.
Prévention vieillissement cutané crème solaire.
Sun care
4 min of reading
Does sunscreen prevent skin ageing?

Beyond protecting against skin cancer and sunburn, the use of sunscreen is touted as one of the best precautions to prevent premature skin ageing. But can it truly help delay the formation of wrinkles, age spots and other signs of premature skin ageing?

Différence d'efficacité entre crème de jour avec SPF et crème solaire.
Sun care
4 min of reading
Is a day cream with SPF as effective as a sunscreen?

We all know it: sun protection is crucial, and this means that any sun product is better than none at all. Today, it is now included in a variety of skincare products, such as your daily moisturiser. Aside from the fact that it can simplify your daily skincare routine, is it truly effective in protecting the skin against the harmful UVA and UVB rays of the sun? Continue reading to discover how the SPF in moisturisers compares to traditional sunscreens.

Effets crème solaire microbiote cutané.
Sun care
4 min of reading
Does sunscreen alter the skin microbiome?

Using a sunscreen is highly recommended to protect oneself from the harmful effects of the sun on the skin. However, recent studies indicate the possibility of a disruption to the skin microbiota, these micro-organisms that colonise our skin, through the use of sunscreen. What's the situation?

Gestes protection soleil peau bébé.
Environment
6 min of reading
What are the right actions to protect a baby's skin from the sun?

While the beautiful summer days may inspire you to wander and take your baby for a stroll, it's important to remember that the UV rays emitted by the sun are not without risks. To enjoy the fine weather while protecting your child's delicate skin, it's crucial to adopt the right practices. Continue reading to learn all our advice.

Huile de ricin protection solaire naturelle.
Active substances
4 min of reading
Is castor oil effective as a natural sun protection for the skin?

Endowed with numerous properties for the skin and hair, castor oil is incorporated into various cosmetic treatments. Some people even consider it as a natural sun protection. What is the actual effect of this vegetable oil on UV rays?

FAQ about sun protection

How long before sun exposure should you apply sunscreen?

It is recommended to apply sunscreen 30 minutes before sun exposure based on testing methods. Protocols require a 15 to 20 minute drying period before measuring the sun protection factor to ensure water resistance. No evidence indicates sunscreen efficacy is delayed.

How many times should you reapply sunscreen during the day?

It depends on the activity. For prolonged exposure at the pool or beach, we recommend reapplying the sunscreen every two hours. In contrast, for a commute between home and the office, a single application in the morning is sufficient.

Does SPF protect against UVA?

The SPF measures the filtration rate of erythemal UV rays by a sunscreen, which comprise 85% UVB and 15% UVA.

After several days of sun exposure, is it possible to reduce the applied SPF?

According to some studies, applying sunscreen for several consecutive days before UV exposure may establish a baseline protection in the skin. This might suggest that switching to SPF 30 is possible after using SPF 50 for several days. However, research remains limited, and as a precaution, a high SPF is recommended throughout the exposure period.

Are tinted products with SPF sufficient to protect skin?

Makeup products with SPF offer supplementary protection but are insufficient on their own for complete, lasting sun protection because they are not applied in sufficient quantities.

Should you apply sun protection in winter?

Yes, it is recommended to apply a sunscreen throughout the year. Even in winter, lower UV levels can accelerate photodamage and worsen photosensitive conditions such as hyperpigmentation or acne.

Are waterproof sunscreens water-resistant?

Waterproof sunscreens offer limited water resistance. They cover swimming and must be reapplied after swimming.

Does layering multiple sunscreens increase sun protection?

No, SPFs cannot be added together. However, pairing skincare with a sunscreen helps ensure that enough sunscreen is applied to reach the labelled protection factor.

Is sun protection necessary under a parasol?

Yes, a sunscreen is necessary under a parasol because UV rays reflect off sand and water.

What are the risks of using expired sunscreen?

An expired sunscreen has lost its ability to reflect and absorb UV and does not protect against the sun. It may cause skin reactions.

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