What is the shelf life of sunscreen?

Sunscreen is an essential skin care product in our daily life. It is a beauty product that we need all year round. Sunscreen can protect the skin from the harm of SUV and UVA, and keep the skin white, tender and clean. How long is the shelf life of sunscreen?

What is the shelf life of sunscreen?

(1) Sunscreen usually has a shelf life of two to three years, and many of us think that it will last for several years as long as it is not opened.

(2) Did you know that the sunscreen ingredients in sunscreen are very unstable? So no matter where it is, it is an unstable ingredient, so even if you don't open it, it will still lose its effectiveness and deteriorate. Because sunscreen is in close contact with the air on the face, the oxidation value reaches the maximum, and the expiration time is accelerated, so there is such a saying as reapplying sunscreen. So even if the sunscreen is in the bottle, it will still be exposed to oxygen and sunlight, but it will lose its effectiveness faster if it is not applied to the face.

3) When buying sunscreen, we should choose those that have been produced within six months and used within three months after opening, so that it can achieve its maximum effect.