NF EN ISO 24443

NF EN ISO 24443

December 2021
Standard Current

Cosmetics - Determination of sunscreen UVA photoprotection in vitro

This document specifies an in vitro procedure to characterize the UVA protection of sunscreen products. Specifications are given to enable determination of the spectral absorbance characteristics of UVA protection in a reproducible manner.In order to determine relevant UVA protection parameters, the method has been created to provide an UV spectral absorbance curve from which a number of calculations and evaluations can be undertaken. These include calculation of the Ultraviolet-A protection factor (UVA-PF) [correlating with in vivo UVA-PF from the persistent pigment darkening (PPD) testing procedure], critical wavelength and UVA absorbance proportionality. These computations are optional and relate to local sunscreen product labelling requirements. This method relies on the use of static in vivo SPF results for scaling the UV absorbance curve.This document is not applicable to powder products such as pressed powder and loose powder products.

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Main informations

Collections

National standards and national normative documents

Publication date

December 2021

Number of pages

51 p.

Reference

NF EN ISO 24443

ICS Codes

71.100.70   Cosmetics. Toiletries

Classification index

T75-615

Print number

2 - 01/04/2022

International kinship

ISO 24443:2021

European kinship

EN ISO 24443:2021
Sumary
Cosmetics - Determination of sunscreen UVA photoprotection in vitro

This document specifies an in vitro procedure to characterize the UVA protection of sunscreen products. Specifications are given to enable determination of the spectral absorbance characteristics of UVA protection in a reproducible manner.

In order to determine relevant UVA protection parameters, the method has been created to provide an UV spectral absorbance curve from which a number of calculations and evaluations can be undertaken. These include calculation of the Ultraviolet-A protection factor (UVA-PF) [correlating with in vivo UVA-PF from the persistent pigment darkening (PPD) testing procedure], critical wavelength and UVA absorbance proportionality. These computations are optional and relate to local sunscreen product labelling requirements. This method relies on the use of static in vivo SPF results for scaling the UV absorbance curve.

This document is not applicable to powder products such as pressed powder and loose powder products.

Replaced standards (1)
NF EN ISO 24443
August 2012
Standard Cancelled
Determination of sunscreen UVA photoprotection in vitro

ISO 24443:2012 specifies an in vitro procedure to characterize the UVA protection of sunscreen products. Specifications are given to enable determination of the spectral absorbance characteristics of UVA protection in a reproducible manner. In order to determine relevant UVA protection parameters, the method has been created to provide a UV spectral absorbance curve from which a number of calculations and evaluations can be undertaken. This method relies on the use of in vivo SPF results for scaling the UV absorbance curve.

Table of contents
  • Avant-propos
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes, définitions, symboles et termes abrégés
  • 4 Principe
  • 5 Appareillage
  • 6 Méthode d'essai
  • 7 Mode opératoire utilisant la feuille de calcul du présent document
  • 8 Produit de protection solaire de référence
  • 9 Rapport d'essai
  • Annexe A (normative) Étalonnage du spectrophotomètre et essai de transmission de la plaque
  • Annexe B (normative) Mode opératoire d'étalonnage du radiomètre pour le mesuragede l'irradiance spectroradiométrique
  • Annexe C (normative) Valeurs de calcul: spectres d'action de la PPD et de l'érythème et intensité de l'irradiance spectrale des sources UVA et UV-SSR
  • Annexe D (normative) Spécifications de la surface des plaques de PMMA
  • Annexe E (normative) Formulations des produits de protection solaire de référence
  • Annexe F (informative) Calculs statistiques
  • Annexe G (informative) Définition et exemples de résultats valides/Facteur "C"
  • Bibliographie
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