Sunblock Protection Strengths

AIM

The purpose of this project is to find out if SPF matters when you buy sun block. For example, does a CVS brand 30 sunblock work better than a CVS brand 15 sunblock? I also wanted to know if higher priced sunblock works better than lower priced sunblock of the same SPF? My hypothesis was that the higher the SPF the better it would protect and that higher priced sun block would work better than lower priced.

Procedure

Sunblock Protection Strengths Science Fair Project