Sun protection

It is generally recommended to apply sunscreen About 30 minutes before sun exposure due to how sun protection products are tested. Protocols require 15 to 20 minutes of drying time before assessing sun protection factor to ensure water resistance, but no evidence suggests that sunscreen efficacy is delayed.

It depends on the activity. For prolonged exposure at a pool or beach, reapply the sunscreen every two hours. For a commute from home to the office, one morning application is sufficient.

The SPF measures a sunscreen’s ability to filter erythemal UV rays, which consist of 85% UVB and 15% UVA.

According to some studies, applying sunscreen for several consecutive days before UV exposure may provide a baseline level of protection for the skin. This could suggest it is possible to use an SPF 30 product after several days of SPF 50 use. However, research on this topic remains insufficient, and as a precaution, we recommend continuing to use a high SPF throughout the exposure period.

Tinted formulas with SPF provide additional protection. Alone they do not provide complete, long-lasting sun protection because they are not applied in sufficient quantity.

Yes, we recommend applying a sun protection throughout the year. Although UV levels drop in winter, remaining exposure can accelerate photoaging and worsen photosensitive conditions such as hyperpigmentation or acne.

Waterproof sunscreens offer limited water resistance to a single swim and require reapplication after swimming.

No, SPFs cannot be added together. Combining skincare with sunscreen can help. You need a certain amount to reach the protection level stated on the label.

Yes, sunscreen is necessary under an umbrella because UV rays reflect off sand and water.

An expired sunscreen has lost its ability to reflect and absorb UV and no longer protects against sun exposure. It may also cause skin reactions.