ISO INTERNATIONAL STANDARD 16217 First edition 2020-05 Cosmetics Sun protection test methods Water immersion procedure for determining water resistance Cosmétiques-Méthodesd'essai de protection solaire-Mode operatoire d'immersion dans I'eau pour la détermination de la résistance aI'eau Reference number IS0 16217:2020(E) ISO @ ISO 2020 IS0 16217:2020(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting below orIso's member body in the country of therequester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland i @IS0 2020 - All rights reserved IS016217:2020(E) Contents Page Foreword .iv 1 Scope. 1 2 Normative references 1 3 Terms and definitions .1 4 Principle .2 4.1 Mainsteps 2 4.2 General principle 2 5 Test criteria. .2 5.1 Selection ofthetest subjects .2 5.2 Test area. 3 5.3 Product application. 3 Waterimmersionprocedure .3 6 6.1 Room conditions. .3 6.2 Water quality 3 6.3 Immersion sequencing cycle .3 6.4 Positioning of test subjects.. 3 6.5 Drying after immersion 6.6 ReversiontoIS024444procedure .4 7 Water quality and condition. 4 8 Procedural validation 4 8.1 General .4 8.2 4 8.3 Calculation of the water resistance SPF (SPFwr) .5 8.4 5 Statisticalcriterion. 9 Test report - post-water immersion SPF. .5 AnnexA (normative)Simulated swimtest devicedesign 6 Annex B (normative) Standardized water requirements ..7 AnnexC (normative)Standardreferencesunscreen .8 AnnexD (normative) Productpositioning on test subjects .9 Bibliography 10 IS0 2020-All rights reserved iii