Eucerin Hyaluron-Filler 3x Effect Vitamin C Booster is an anti-aging serum with 10% pure and freshly-activated vitamin C. Suitable for all skin types, this serum fights free radicals and addresses the first signs of aging. In order to achieve this, it strengthens the skin, plumps up wrinkles, and gives the skin a smoother, fresher, and more radiant look. In a study conducted with 140 women aged 35-55, 99% of volunteers confirmed the skin felt softer and looked revitalized; 98% found the skin fresher and younger-looking; 97% thought the skin was smoother and firmer; 83% reported that wrinkles were noticeably plumped up.