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Full Description

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).
 

Document History

  1. BS EN ISO 18861:2021

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    Cosmetics. Sun protection test methods. Percentage of water resistance

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  2. BS ISO 18861:2020


    Cosmetics. Sun protection test methods. Percentage of water resistance

    • Historical Version