K. Itoh’s scientific contributions

... In conclusion, they suggested that fish-derived hydrolyzed collagen can be safely used to improve skin health in an aging population [14]. In a study with female subjects diagnosed with dry and rough skin, six weeks of daily intake of 7 g of fish hydrolyzed collagen was reported to significantly improve the moisture content of the skin in face-cheek, forearm, and the back of the neck and enhance the skin elasticity by reducing wrinkles and lowering skin roughness [44]. In another place-controlled study, the use of 2.5 or 5 g hydrolyzed collagen for 60 days was reported to improve skin elasticity significantly and skin moisture compared to placebo, while the improvement in elasticity was noticed among older women relatively earlier (at 1-month follow-up) [19]. ...

Reference:

The Efficacy and Safety of CollaSel Pro Hydrolyzed Collagen Peptide Supplementation without Addons in Improving Skin Health in Adult Females: A Double Blind, Randomized, Placebo-Controlled Clinical Study Using Biophysical and Skin Imaging Techniques