Usually sunscreens are classified by the scale SPF (English Sun Protection Factor). The SPF numbers that appear on the labels of reported tanning products capacity to block UVB rays and prevent sun burns. Therefore, higher SPF value, better protection from harmful solar radiation.
Some sunscreens also include information on their protection against UVA rays, but for the moment, there is no internationally agreed standardized method to measure this action.
The SPF method is governed by tests in vivo and is recognized by the Food and Drug Administration (FDA) U.S. agency charged with evaluating food and drugs, and by The European Cosmetic Toiletry and Perfumery Association (Colipa) of the European Union.
The SPF values can be translated as follows:
* Between 2 and 5 low protection
* Between 6 and 11: average protection
* Between 12 and 19: high protection
* Between 20 and 29: maximum protection
* From 30: extreme protection
Possibility Related Posts:
- Sun Cream to Protect Skin from the Sun
It is summer and it is important for us to bring out protection on our skin when we are going out. Too much exposure to sunlight can damage our skin and it is important to use sun block protection in ... - Enemies of your skin
Our precious skin has many enemies. These attackers constantly attack causing wrinkles, lines, spots and others. Meet some of their most powerful enemies and protect your skin.
Stress
Few things c... - Natural Recipes for radiant skin
The skin is radiant glow that shows the health and happiness in the face. It's easy to have it in adolescence and the first half of the twentieth.
As time passes or when we neglect the skin can los... - How is your skin type?
The choice of an index or other protection will depend on skin type (phototype) of each person and their sensitivity index sun exposure. Here we show a table, so you can choose the tanning your skin n... - Characteristics and care for every skin type
When we talk about beauty we mean a set of physical and spiritual attributes that produce an attractive to others. Although the most important thing is the interior, we can not ignore the most visible... - Tips to relieve heat stress
We all know very well the importance of avoiding heat stroke, however, no one is free to go with the excitement of summer and forget to take precautions for a day at the beach does not become a living...