OSKIA Retinoid Sleep Serum Level 2 provides a higher strength and is best suited for those who have used retinoids in the past and haven’t shown any signs of skin irritation. Contains OSKIA’s advanced super-nutrient retinoid complex with high concentrations of cellular nutrients, plus botanical actives and key antioxidants. Non-greasy and deeply penetrating, use this supercharged serum as a part of your evening skin routine.
