Achieve the highest level of retinol exfoliation with Biopelle Retriderm Serum Max. It uses 1% retinol to perfect seriously sun-damaged, wrinkled and uneven skin tone. This is the next step up from Retriderm Serum Plus. This lightweight treatment dramatically improves the tone and texture of the skin.Who is this for?For those with hyperpigmented, sun-damaged and aging skin.