Applying sun protection, also known as SPF or anti-UV protection, in the morning helps to PROTECT the skin from the harmful effects of UV: sunburn, the result of UVB rays, but also and above all UVA rays, which are responsible for premature aging of the skin and, in the long term, potentially for the risk of skin diseases such as skin cancer.

Applying sun protection on a daily basis helps prevent the appearance of spots and uneven skin tone caused by UV rays. The result is a brighter, more even complexion and, above all, the prevention of premature ageing.

For Dr. Antoni Calmon, sun protection is the most effective anti-aging measure available. He designed this product for the PROTECT stage of the PERS protocol, because UVA rays, which are responsible for skin ageing, are present all year round, not just in summer.

An application 2 to 3 times a day is recommended all year round. In the event of direct exposure to the sun, reapplication every two hours is recommended.

Apply UV protection once or twice a day when the UV index is 3 or lower.

For a UV index above 3, apply protection at least twice a day, even if you're in an enclosed environment with no direct exposure, including through a window.

For direct exposure to the sun, apply protection every two hours, even through a window or in the car. Don't forget to apply UV protection before any exposure, even for a short time during the day.

You can find UV indices in the weather applications on your smartphone.

The "+" stands for UVA Protection, a measure against UVA rays mainly used in Asia. The PA classifies protection levels into four categories: PA+, PA++, PA+++, and PA++++. For everyday use, PA+ provides very good protection. On the other hand, for skin that is extremely sensitive to the sun, regularly exposed to the sun, or has a family history of skin cancer, PA+++ or PA++++ are recommended.

PA stands for "Protection Grade of UVA", i.e. the level of protection against UVA rays. PA+ ratings measure a product's ability to block UVA rays.

Developed in Japan, the PA rating system is based on the PPD (Persistent Pigment Darkening) method. This test relies on exposure to UVA rays to induce persistent tanning of the skin, making it possible to assess how long it takes before the skin tans.

In theory, a sunscreen with a PPD value of 10 would enable a person to withstand 10 times more UVA exposure before tanning. However, PPD values cannot be measured with perfect accuracy. As there is no standardized system for assessing PPD scores, different rating systems are used in different countries to indicate the strength of UVA protection. PPD therefore does not give an exact amount of UVA protection, but is converted according to the rating system in force in each country or region.

Only some countries use UVA tests, notably Japan, the UK, Germany, the USA and Australia. In Japan, PPD results are grouped and simplified in the form of PA labels.

The equivalences are as follows:

• If PPD = 2 to 4 → PA+.
• If PPD = 4 to 8 → PA++
• If PPD = 8 to 16 → PA+++
• If PPD ≥ 16 → PA++++

It's important to note that not all countries use the same rating system, as PPD is not standardized internationally.

In a nutshell, PA+ means you have some UVA protection, and the more "+" there are, the higher the protection. Currently, the highest level of UVA protection available is PA++++.

Yes, you can apply your sun protection after your moisturizer.

To properly PROTECT your skin, we recommend applying your Vitamin C Serum, followed by your cream if you feel the need, and finishing with your daily SPF50+ protection.

Sun protection and day cream have different needs.

We recommend that you apply your sun protection daily with as high a factor as possible, such as broad-spectrum SPF50+.

PERS SPF50+ protection has been tested non-comedogenic, making it perfectly suited to oily skin. It also helps control sebum production and the risk of acne.