SIST EN ISO 23675:2025

Cosmetics - Sun protection test methods - In vitro determination of sun protection factor (SPF) (ISO 23675:2024)

This International Standard specifies a method for the in vitro determination of Sun Protection Factor. This International standard is applicable to sunscreen products with an emulsion chassis, which are intended to be placed in contact with human skin.

Kosmetische Mittel - Untersuchungsverfahren für Sonnenschutzmittel - In vitro Bestimmung des Sonnenschutzfaktors (SSF) (ISO 23675:2024)

Dieses Dokument legt ein Verfahren zur In-vitro-Bestimmung des Sonnenschutzfaktors (SSF) fest. Dieses Verfahren gilt für Sonnenschutzmittel in Form einer Emulsion oder einer alkoholischen Einphasenrezeptur, ausgenommen Sonnenschutzmittel in Form eines losen oder gepressten Puders oder Stiftes. Es werden Spezifikationen angegeben, die eine reproduzierbare Bestimmung der spektralen Extinktionseigenschaften des SSF-Schutzes ermöglichen.
Dieses Verfahren dient ausschließlich der Bestimmung eines statischen Sonnenschutzfaktors. Für die Bestimmung der Wasserbeständigkeit eines Sonnenschutzmittels ist es nicht anwendbar.

Cosmétiques - Méthodes d’essai de protection solaire - Détermination in vitro du facteur de protection solaire (FPS) (ISO 23675:2024)

Le présent document spécifie une méthode de détermination in vitro du facteur de protection solaire (FPS). Cette méthode est applicable aux produits de protection solaire sous la forme d’émulsion ou de formulation alcoolique monophasée, mais pas à ceux sous la forme de poudre libre ou compacte ou de stick. Des spécifications sont fournies pour permettre de déterminer les caractéristiques d’absorbance spectrale de la protection FPS de façon reproductible.
L’utilisation de la présente méthode est strictement réservée à la détermination d’un facteur de protection solaire statique. Elle n’est pas applicable à la détermination de propriétés de résistance à l’eau d’un produit de protection solaire.

Kozmetika - Preskusne metode za zaščito pred soncem - Določanje faktorja zaščite pred soncem (SPF) in vitro (ISO 23675:2024)

General Information

• Status: Published
• Public Enquiry End Date: 02-Mar-2024
• Publication Date: 04-Feb-2025
• ICS: 71.100.70 - Cosmetics. Toiletries
• Technical Committee: KDS - Cosmetics, chemical disinfectants and surface active agents
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 28-Jan-2025
• Due Date: 04-Apr-2025
• Completion Date: 05-Feb-2025
• Ref Project: EN ISO 23675:2025 - Cosmetics - Sun protection test methods - In vitro determination of sun protection factor (SPF) (ISO 23675:2024)

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2025
Kozmetika - Preskusne metode za zaščito pred soncem - Določanje faktorja
zaščite pred soncem (SPF) in vitro (ISO 23675:2024)
Cosmetics - Sun protection test methods - In vitro determination of sun protection factor
(SPF) (ISO 23675:2024)
Kosmetische Mittel - Untersuchungsverfahren für Sonnenschutzmittel - In vitro
Bestimmung des Sonnenschutzfaktors (SSF) (ISO 23675:2024)
Cosmétiques - Méthodes d’essai de protection solaire - Détermination in vitro du facteur
de protection solaire (FPS) (ISO 23675:2024)
Ta slovenski standard je istoveten z: EN ISO 23675:2025
ICS:
71.100.70 Kozmetika. Toaletni Cosmetics. Toiletries
pripomočki
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 23675
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2025
EUROPÄISCHE NORM
ICS 71.100.70
English Version
Cosmetics - Sun protection test methods - In vitro
determination of sun protection factor (SPF) (ISO
23675:2024)
Cosmétiques - Méthodes d'essai de protection solaire - Kosmetische Mittel - Untersuchungsverfahren für
Détermination in vitro du facteur de protection solaire Sonnenschutzmittel - In vitro Bestimmung des
(FPS) (ISO 23675:2024) Sonnenschutzfaktors (SSF) (ISO 23675:2024)
This European Standard was approved by CEN on 22 November 2024.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 23675:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 23675:2025) has been prepared by Technical Committee ISO/TC 217
"Cosmetics" in collaboration with Technical Committee CEN/TC 392 “Cosmetics” the secretariat of
which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by July 2025, and conflicting national standards shall be
withdrawn at the latest by July 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 23675:2024 has been approved by CEN as EN ISO 23675:2025 without any modification.

International
Standard
ISO 23675
First edition
Cosmetics — Sun protection test
2024-12
methods — In vitro determination
of sun protection factor (SPF)
Cosmétiques — Méthodes d’essai de protection solaire —
Détermination in vitro du facteur de protection solaire (FPS)
Reference number
ISO 23675:2024(en) © ISO 2024
ISO 23675:2024(en)
© ISO 2024
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 on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 23675:2024(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principles . 4
5 Reagents and/or materials . 4
5.1 Sample substrate — Double plate .4
5.2 Reference sunscreen .4
5.3 Finger-cot .4
5.4 Blank .4
6 Apparatus . 4
6.1 Spectrophotometers .4
6.1.1 Specification .4
6.1.2 Monitoring .5
6.2 Automatic positive-displacement pipette .5
6.3 Analytical balance .5
6.4 Robot .5
6.4.1 Specifications .5
6.4.2 Monitoring .5
6.5 Solar simulator .6
6.5.1 General .6
6.5.2 Quality of solar simulator radiation .6
6.5.3 Maintenance and monitoring the solar simulator .6
7 Procedure . 7
7.1 Outline of the test procedure .7
7.2 Preparation of reagents and materials .8
7.2.1 Plate preparation and handling .8
7.2.2 Finger cot.9
7.3 Product application on plates and robot automatic spreading .9
7.3.1 Weighing of product and application on plates .9
7.3.2 Automatic spreading .10
7.4 Measurement of initial absorbance using two plate types (290 nm to 400 nm) .10
7.4.1 Blank measurement .10
7.4.2 Initial absorbance measurement .10
7.4.3 Calculation of pre-irradiation in vitro SPF .11
i
7.5 Calculation of irradiation dose (based on pre-irradiation in vitro SPF ). 12
i
7.6 Irradiation with calculated dose . 12
7.7 Measurement of post-irradiation absorbance using two plate types . 12
7.8 Calculation of post-irradiation in vitro SPF . 12
i
7.9 Calculation of final in vitro SPF of each pair of plates . 13
i
7.10 Calculation of final in vitro SPF of the product . . 13
7.10.1 General . 13
7.10.2 Validation of final in vitro SPF . 13
8 Test report .
...