Question

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Answer 1

Sunblock: Sunblock is made up of minerals. They prevent the UV radiations from reaching the skin. They remain in the skin top and reflect the UV radiations. It does not absorb into the skin and can be used when needed. Sunblocks are made up of titanium oxide and zinc oxide and easy to remove.

Sunscreen: It is made up of chemical ingredients. Sunscreens absorb into the skin and absorb the UV rays penetrating into the skin. It must be applied 15 minutes prior to exposure. Because of flushing of face and cheek, it is better to use with makeup

SPF: The protection factor. It is a number on a scale for rating the degree of protection provided by the sunscreens. The maximum SPF value for sunscreen is 50+. The number measures the products ability to absorb the harmful rays.

SPF 50+ is better:

SPF 50+ blocks 98% of UVB rays and SPF 30+ blocks 96-97% of UVB rays . The patients with sensitive skin and skin cancer prefer SPF 50+ sun screens.