The BioDerma Photoderm AKN Mat Fluide is a dual-action matifying fluid: high photoprotection and prevention of skin blemishes. A BIODERMA innovation, the 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). Moreover, in addition to its surface UVA/UVB protective activity (filtering systems), Photoderm AKN Mat offers real internal biological protection: Cellular Bioprotection. This exclusive patent preserves and stimulates the skin's defences (immunity) during sun exposure. How to use: Several times a day when exposed to the sun Apply evenly and liberally before exposure (a smaller amount of product reduces the level of photoprotection). Re-apply frequently, before and after swimming, rubbing and playing sports. Do not expose babies or young children to the sun. Excessive sun exposure is harmful to your health.