What kind of type of skin am I?
Example:
Sensitive types of skin (white skin, red hair) get in Mid Summer at hot and sunny days already after 10 minutes light forms of sunburn. Clothes with the protection factor 40 makes those persons able to stay 40 times longer than 10 minutes in the sun.
Skin type 1
Sunburn after 5 - 10 Min. 
Skin type 2
Light browning after 10 - 20 Min.
Skin type 3
Middle browning after
20 - 30 Min. 
Skin type 4
Fast browning after
40 Min.
