<unk>  are a set of topically applied products that include skin creams and facial masks. They are designed to reduce or diminish the effects of<unk> . Many products seek to hide the effects of<unk>  while others claim to alter the body's chemical balances to slow the physical effects of<unk> . A comprehensive grading scale for<unk><unk>  of the skin has been validated and categorizes skin<unk>  as: laxity (sagging), rhytids (wrinkles), and the various categories of photoaging, including erythema (redness), dyspigmentation (brown discolorations), solar elastosis (yellowing), keratoses (abnormal growths), and poor texture. Despite great demand, many such products and treatments have not been proven to give lasting or major positive effects. One study found that the best performing creams reduced wrinkles by less than 10% over 12 weeks which is not noticeable to the human eye. Another study found that cheap moisturizers were as effective as high-priced<unk> -wrinkle creams. Traditionally,<unk><unk>  creams have been marketed towards women, but products specifically targeting men are increasingly common.
Anti-aging supplements
Bodybuilding supplement
Longevity medicine 
Breast enlargement supplement
Anti-obesity medication
Protein supplement
Body modification
Fibre supplements