ISO 16217:2020

This document specifies a procedure of water immersion for the in vivo determination of the water resistance of sunscreen products.
This document is applicable to products intended to be placed in contact with human skin including any component able to absorb, reflect or scatter UV rays and which, in addition, are designed to be less readily removed from the skin by water and/or during water immersion. It is intended to be read in conjunction with ISO 24444.