Extreme C 20 is a vitamin C serum that tackles just about every sign of dermal ageing you care to imagine and does so from every conceivable angle, thanks to an exclusive breakthrough combination of cutting edge amino peptides, face-saving Vitamin C and skin energising extracts. Vitamin C is a potent antioxidant that has many benefits. It protects our skin cells from all types of environmental damage, stimulates collagen production and gives the skin a beautiful even and luminous glow. 4.58 years younger in 84 days - now that's extreme!