DIN EN ISO 24444:2011-03

The standard DIN EN ISO 24444 specifies a method for the in vivo determination of the sun protection factor (SPF) of sunscreen products. It is applicable to products that contain any component able to absorb, reflect or scatter UV rays and which are intended to be placed in contact with human skin. This International Standard provides a basis for the evaluation of sunscreen products for the protection of human skin against sunburn induced by solar ultraviolet rays. The level of sun protection provided by sunscreen products has traditionally been estimated using the sun protection factor or SPF test, which uses the erythemal response of the skin to UV radiation. The SPF is a ratio calculated from the energies required to induce a minimum erythemal response with and without sunscreen product applied to the skin of human volunteers. It uses ultraviolet radiation usually from an artificial source. The International Standard ISO 2444:2010 has been prepared by ISO/TC 217 "Cosmetics" (secretariat: ISIRI, Iran). CEN/TC 392 "Cosmetics" (secretariat: NEN, Netherlands). The collaboration of DIN for the field of responsibility of CEN/TC 392 is performed through the national Mirror Committee, Working Committee NA 057-07-01 AA "Kosmetische Mittel" ("Cosmetics") of NAL.