BNIB Alpha H Beauty Sleep Power Retinol Peel. 15ml/.51 fl oz - Deluxe Travel Size. A powerful overnight resurfacing mask formulated with Vitamin A, Glycolic Acid and Papaya Enzyme to exfoliate, smooth and stimulate skin renewal. Designed to target the visible signs of aging and clinically proven to increase collagen production for a plump, even and healthy complexion. pH 3.6 - 4.0 Overnight leave-on mask. Reduces the appearance of hyper-pigmentation, Smoothes fine lines and wrinkles. Evens out skin texture and tone. Optimizes skin regeneration.