4 in 1 : Day, Night, Eye Contour, Neck & Décolleté Radiance +C Booster Vitality Renewal Care Express Glow, Instant Smoothing, Plumping, Even Complexion, Anti-Pollution, 24H hydration The HD Bio-Boost Serum is the perfect daily “radiance booster” for skin that needs a powerful dose of energy. It is highly concentrated in organic* extracts of argan, grape, ginseng and plum from Australia (a superfruit 100x more concentrated in vitamin C than oranges). In addition to hydrating in depth, this serum quickly replenishes the skin’s natural glow and vitality. The skin looks incredibly smoother, plumper with a more even complexion. Its anti-pollution shield protects the skin from environmental stressors.