Betekenis van:
darkening

Werkwoord

Voorbeeldzinnen

1. ‘UVA protection factor’ means the ratio of the minimum UVA dose necessary to induce a persistent pigment darkening on the skin protected by a sunscreen product to the minimal UVA dose necessary to induce the minimal darkening effect on the same unprotected skin.
2. In order to assess the minimum protection against UVA radiation, the persistent-pigment darkening method as applied by the Japanese industry and modified by the French health agency Agence française de sécurité sanitaire des produits de santé — Afssaps as well as the critical wavelength test should be used.
3. a UVA protection of UVA protection factor of 1/3 of the sun protection factor, as obtained in application of the persistent pigment darkening method as modified by the French health agency Agence française de sécurité sanitaire des produits de santé – Afssaps or an equivalent degree of protection obtained with any in vitro method;
4. Scientific findings show that certain biological damage to the skin can be prevented and reduced if the ratio of the protection factor measured in the persistent pigment darkening test (i.e. addressing mainly UVA radiation) is at least 1/3 of the factor measured by the sun protection factor testing method (i.e. addressing mainly UVB radiation).
5. Therefore, the protection against UVA and UVB radiation should be related. Scientific findings show that certain biological damage to the skin can be prevented and reduced if the ratio of the protection factor measured in the persistent pigment darkening test (i.e. addressing mainly UVA radiation) is at least 1/3 of the factor measured by the sun protection factor testing method (i.e. addressing mainly UVB radiation).