Day / Night Emulsion Active & Stable Vitamin C Properties: La Roche-Posay Laboratoire Pharmaceutique has developed, thanks to a high technology process, Active C, a formula based on active stable vitamin C. This vitamin C, in the form of L-ascorbic acid, is the only form immediately active on skin. Its properties are remarkable on signs of skin aging. From the first few days of treatment, you can notice Active C's effect on the skin. Its formulation enriched with vitamin C and La Roche-Posay thermal water, rich in trace elements, protects against oxidation, an important skin aging factor. Made in FranceWarnings For external use only. Avoid contact with eyes. Discontinue use if irritation occurs. Keep away from children.