Do Collagen Supplements Actually Help Skin?
The Science Behind Oral Collagen
Collagen supplements contain hydrolyzed collagen peptides small enough to be absorbed by the gut, potentially stimulating fibroblasts to produce new collagen.
What Research Shows
A 2019 meta-analysis of 19 RCTs found that 2.5-10g daily collagen for 8-24 weeks significantly improved skin elasticity, hydration, and collagen density.
Marine vs Bovine
Marine collagen has the highest bioavailability. Bovine collagen is more affordable with a broader amino acid profile. Plant-based versions are collagen-boosting nutrients, not actual collagen.
Realistic Expectations
Results appear after 8-12 weeks of consistent use. Choose supplements with verified hydrolyzed collagen (peptides under 5,000 Daltons) and third-party testing.
