Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
The UVA star rating is a method of showing the UVA protection in a sunscreen when O.5.4.3.1 compared as a ratio to the levels of protection provided against UVB. The level of UVA protection is determined by the UVA-PF test (see O.5.4.2) and then calculated based on the SPF of the product. The stars range from nought to five, the bigger the number of stars the better the protection. However, it should be borne in mind that the number of stars is based on the SPF, so a high number of stars for a sunscreen with a low SPF gives less protection against UVA than the same number of stars for a higher rated SPF.