NF EN ISO 18861:2021
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Cosmetics - Sun Protection Test Methods - Percentage Water Resistance
Hardcopy
English - French
12-01-2021
This document specifies a procedure for evaluating the water resistance retention percentage, by comparing the sun protection factor (SPF) before water immersion (hereafter referred to as the "static" SPF) and after a fixed period of water immersion (hereafter referred to as the "wet" SPF).
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