Collagen

The most prevalent protein in your body, collagen makes up about 75% of the dry weight of your skin. According to some studies, consuming collagen-based supplements may offer a number of advantages for your skin, including reducing the depth of wrinkles and boosting skin moisture. According to a study of 69 women, those who received 2.5 to 5 grams of collagen per day for eight weeks had significantly improved skin elasticity and had more hydrated skin than those who took a placebo. Another 12-week trial involving 72 women found that, in comparison to a placebo group, taking a supplement containing 2.5 grams of collagen peptides and a combination of other components including vitamin C and zinc dramatically reduced skin roughness and hydration.

It's unclear if collagen alone would have had the same benefits because the dietary supplement also contains other nutrients. Additionally, the study was supported by the producer of the dietary supplement, which might have influenced the findings. Taking oral collagen supplements with 2.5–10 grams per day for 4–24 weeks enhanced skin hydration and alleviated xerosis, a medical term for dry skin, according to a 2019 assessment of 11 trials. Before buying a third-party-approved product, see your healthcare practitioner if you want to take a collagen supplement to treat your dry skin.