P20 spf20 sun protection lotion p20s unique formula is non greasy non oily and fragrance free to provide the ultimate coverage both in and out of the water for up to 10 hours a day p20 is designed to ensure one application a day is sufficient keeping the time spent reapplying sun protection to a minimum p20 has been categorised as very water resistant the highest classification available from colipa guidelines for evaluating sun product water resistance offering uva and uvb protectio