Diets & Weight Loss

Sun Protection Factor

Commonly seen on suntan ingredients as "SPF," the sun protection factor is the amount of the protection a suntan product provides. The higher the SPF, the greater the protection.

Question: How do you increase the Sun Protection Factor of sun scrren? Is this correct, that as you add more particles of titanium dioide to Sun screen (as this is what reflects UV rays), the greater the Sun Protection Factor of Sun screen?

Answer: If you add the reflective material titanium dioxide, you will decrease the amount of sunlight that reaches your skin, but sunscreens act in a more complex way than simply blocking the radiation completely. If you put sunscreen on very thinly, then you can increase the factor by adding more, but once the skin has absorbed a complete layer, there is not much you can do to increase the factor of screening other than to use a stronger factor screen.

 


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