Retinol-based creams and products can be bought online from such major retailers as Amazon.com, eBay and Canada Drugs. The products generally can be found under the category of "Health and Beauty" in the "Skin Care" products listing.
According to an eBay buying guide, retinol creams are primarily available as night creams and eye creams. Because retinol breaks down when it is exposed to the sun, most of the creams are made to be applied at night.
Retinol creams may contain other skin-rejuvenating ingredients, such as caffeine, which slows the formation of wrinkles; coenzyme Q10, which reduces the look of crow's feet; copper peptides, which aid in collagen production; and green tea extract, an antioxidant. Vitamin C, another antioxidant, is added to retinol creams to promote the manufacture of collagen and reduce the look of fine lines. This ingredient, which can also be depleted when exposed to the sun, must be packaged carefully, according to the eBay guide.