These findings are valuable for mechanism, but they cannot substitute for controlled human outcomes
Some people call it chicken skin, because it shows up pink/red on lighter skin tones, but it can appear purple or dark brown on darker skin tones (usually its a few shades darker than your skin tone)
Verkade HJ, Felzen A, Keitel V, Thompson R, Gonzales E, Strnad P, Kamath B, van Mil S
The meta-analysis showed significant associations between hydrolyzed collagen supplementation and an increase in skin density (z=0.48, P=.002), elasticity (z=2.31, P=.02), and hydration (z=2.58, P=.010) and a significant reduction in facial wrinkles (z=1.11, P=009)