To be flawless in terms of sunscreen it is of course necessary to follow the opinion of dermatologists but also of surgeons : the sun is not only the cause of many skin cancers but also of wrinkles, wilting and sagging by "photo aging"
Some recommendations:
You have to start by determining your skin type knowing that no type of skin is spared by these risks;
Of course, extremely fair skin, red skin, and the skin of patients undergoing medical treatment (antibiotics, etc.) should not be exposed to the sun.
Apply every hour of protective screenss UVA and UVB; how to navigate sun filters ?
Their power is calculated in relation to the time after which they are no longer active. There is no point in applying cream with a low index.
Overall the face must be protected by clues 50, mineral if possible more or less tinted, knowing that these do not prevent a little tan. Don't forget the ears and the neck.
For the body, the neckline must be absolutely protected because it is one of the most fragile areas, it is sometimes necessary to cover it ...
A first consultation will allow you to talk about it and objectively offer you the appropriate treatment according to your needs and the possibilities of the most innovative treatments.