NIB Skin Better Science AlphaRet Overnight Cream A skincare cream featuring a unique ingredient that is made up of a retinoid combined with an alpha hydroxy acid (AHA) that provides visible skin rejuvenation with little-to-no irritation. Why You'll Love It: Improves the appearance of lines, wrinkles, uneven tone and texture. All skinbetter science products are dermatologist tested, paraben free, fragrance free, dye free, and cruelty free.