A powerful serum that hydrates and nourishes the skin to visibly reverse the signs of aging. Visibly improves the revitalization of the skin and the appearance of wrinkles and fine lines, also promotes firmness of the skin. How to use After the GM Collin cleanser and treating mist, apply the quantity best suited for individual skin absorption. Gently massage and follow with the appropriate G.M. Collin product. Frequency: Morning and evening for an intensive program / Morning and/or evening for a maintenance program.