On February 23, 2023, China National Institutes for Food and Drug Control (NIFDC) opened a public consultation on six technical guidelines for in vitro testing, determination for sun protection factor (SPF) and waterproof performance, as well as acute inhalation toxicity testing. This Guidelines is one of the six technical guidelines.

This Guidelines is to give scientific suggestions for waterproof performance testing of sunscreen products, as well as result analysis and evaluation.

The main contents of the Guidelines include the overview, basic principles, basic content (such as equipment requirements, general waterproof performance test, and strong waterproof performance test), result analysis and evaluation, as well as terminology explanation.