The one where it all began. Medik8's classic youth-renewing retinol serum that kick-started our innovations in vitamin A technology. After cleansing in the evening, massage 4 drops of retinol across the face, neck and decolletage. Follow with your moisturiser. We recommend Advanced Night Restore, designed to be used after vitamin A. Retinol application should be phased in gradually. Use twice a week for the first 2 weeks, every other night for the next 2 weeks, then every night. Consult a doctor if breastfeeding or pregnant. You should always use a sunscreen in the morning while using vitamin A.