sensitive advanced is a lotion to reinforce protection against long uva rays. long uvas represent the majority of uv rays that reach the earth. they penetrate deep into the skin & can cause long-term damage which is not immediately visible. they are particularly harsh on fair sensitive & sun-intolerant skin. for these skin types we recommended a product such as this that helps protect against long uva rays., uvb & long uva protection, hypoallergenic, dermatologically tested