Louis Widmer All Day 30 Duo Pack Perfume FreeThanks to highly developed liposome technology, it is possible to incorporate UVA and UVB filters into the monolayer liposomes. These liposomes penetrate deep into the horny layer and therefore offer long lasting protection against UV rays, even with regular contact with water. The high concentration of monolayer liposomes ensures a homogeneous distribution of the UV filters throughout the horny layer. The gel base also contains UVA and UVB filters.