International pioneers in sunscreen research, Lancaster researchers offer you the most complete Lancaster protection along with a sublime and prolonged tan, in a single formula: -The new exclusive Full Light Technology deals with 100% of the sun's rays: in addition to UVB and UVA rays, it also protects the skin from infrared rays and visible light. - An even more uniform and perfectly golden tan, thanks to the new Tanning Activator Complex (TAC - Tan Activator Complex) completes these innovative formulas. Waterproof. Dermatologically tested. Protected skin.