Guerlain reveals a unique multi-layer protection: the Skin Shield Technology. Strengthening the skin's natural defences against the harmful effects of UV rays*, this advanced technology protects the skin "from within". Like a pearl, the skin is protected, layer after layer. This velvety ultra-refining base provides natural coverage, correcting pigmentation marks, imperfections and dullness. Perfectly protected, the skin is beautiful, the complexion flawless and even. *In vitro tests on ingredients