Bioderma Photoderm AKN Mat SPF30 Fluid protects face against UV rays while mattifying the complexion and balances the production of sebum. Changes in sebum fluidity can be responsible for skin blemishes. Exclusive Fluidactiv patent in Photoderm AKN Mat biologically regulates sebum quality to keep pores from becoming clogged and prevent the appearance of blemishes, which is often exacerbated after periods of sun exposure (rebound effect). To protect itself from cellular damage related to sun exposure, the skin relies on natural protective mechanisms that can sometimes prove to be insufficient. For this reason, Bioderma Photoderm AKN Mat Sunscreen holds in another patented complex called Cellular Bioprotection in addition to the surface UVA/UVB protective activity (filtering systems). Photoderm AKN Mat offers real internal biological protection through its Cellular Bioprotection complex. This patented complex reinforces the skin cells' natural defence system to increase their resistance to the negative effects of solar radiation. As an extra benefit, this sunscreen also has an invisible fluid texture and is resistant to both water, heat, and humidity, thus making it a great daily protective ally.