Biopelle Retriderm Serum Max 1% Retinol features a clinically advanced formula designed to visibly reduce the signs of premature aging. Retinol fills in wrinkles and diminishes hyperpigmentation by accelerating cellular renewal. Soluble collagen reduces fine lines as it increases firmness and elasticity for a radiant and revitalized complexion.Ideal for extremely sun damaged skin, those who exhibit a high tolerance to retinoids, or for those looking to step up from Retriderm Plus or Mild. Formulated with the highest strength of retinol to provide maximum rejuvenation and to help restore radiance, luminosity and firmer looking skin.