Shop › Skin Barrier Hydrating Niacinamide Night Gel 30mL Image 1 of 1 Skin Barrier Hydrating Niacinamide Night Gel 30mL $129.00 A niacinamide night gel to strengthen and repair the skin barrier. Reduces sensitivity and locks in moisture overnight. Add To Cart Added! A niacinamide night gel to strengthen and repair the skin barrier. Reduces sensitivity and locks in moisture overnight.