What is your sunscreen label really saying? This topic is discussed in an article in the May edition of Vogue Magazine. In that article Dr. Leffell answers the question “What security do the tempting new SPF 100s actually provide?” According to Dr. Leffell “…there is very little difference between the UVB protection provided by an SPF 30 and 60. At SPF 30 you get about 96% blockage; at SPF 45, about 97%; at SPF 60, its 97.5 or 98%. The higher you go, the lesser the increment. I call it SPF inflation. People use high SPF and they think they don’t have to repply, so the numbers are not helpful in that regard.”
The entire article may be read in Vogue Magazine.