retinol concentrate with intensive action What is it? Concentrated serum with a plant agent that immediately limits the micro-contractions that later cause facial wrinkles.What is it used for? It manages to visibly reduce wrinkles in depth and smoothes the skin.How is it applied? Cleanse skin and then apply to face insisting on the expression lines: forehead. eyelids and area around eyes and lips.Then you can apply the appropriate treatment cream that intensifies its effect.