Riemann p20 once a day spf50 100mlp2039s unique formula is non greasy and fragrance free to provide the ultimate coverage both in and out of the water for up to 10 hours a day110 hours sun protectionp20 is designed to ensure that one application a day is sufficient keeping the time spent applying and re applying sun protection to an absolute minimum p20 is proven to work for up to 10 hours1 due to a very stable formulationsuperior water resistanc