BIODERMA Photoderm AKN Mat Mattifying fluid SPF30 Combination to oily skin 40ml The SPF30 Photoderm AKN Mat mattifying fluidprotects the skin by preventing the appearance of imperfections . The exclusive Fluidactiv™ patent regulates the quantity of sebum to avoid clogging of pores and prevent the appearance of imperfections, often exacerbated by exposure to the sun. In addition to the protective activity against UVA/UVB rays (filtering systems), Photoderm AKN Mat offers real internal biological protection with the Cellular Bioprotection™ patent which activates the skins natural defenses , protecting it from the risk of cellular damage .