1. HOW MUCH TIME SHOULD I APPLY THE SUNSCREEN?: according to dermatological studies, the correct frequency for applying sunscreen is every 4 hours, at which time it is known that the chemical and physical filters have fulfilled their function and leave the skin without further protection.
2. WHAT TYPE OF SUNSCREEN SHOULD I CHOOSE? Sunscreens are classified according to their composition in gels and creams basically. If you have oily skin, you should always choose fluid and gel protectors that also specify "for oily skin" or "oil free" in English. The best for oily or acne-prone skin are those with SPF (Sun Protection Factor) 30 or 35. For mature, dry or dehydrated skin you can use cream sunscreens, with antioxidants, somewhat thicker and with spf of 50 or more. . Don't worry about using an spf 30 sunscreen; really its effectiveness compared to another with spf 60 or 90 only decreases around 3%.
3. IN WHAT SEASONS SHOULD I USE SUNSCREEN? Sunscreen should be a product for daily use. Just like your toothbrush and toothpaste, sunscreen should always be used, every day, regardless of the season, and regardless of whether you'll be home or away. Today it is known that rigorous sun protection of the skin is the key event between those who manage to slow down the aging process and those who do not.