Do Collagen Supplements Work? 2026 Review
The Collagen Boom
$4 billion globally. Science is nuanced - some formulations show real benefits, others are marketing.
Research Findings
Skin Elasticity
Multiple RCTs: hydrolyzed collagen (2.5-10g daily) improves elasticity and hydration after 8-12 weeks.
Wrinkles
Modest reductions in eye wrinkle volume after 8 weeks.
Joints
Type II collagen (40mg daily) benefits joint comfort.
Types
- Type I - skin; marine collagen
- Type III - with Type I; bovine
- Type II - cartilage; joints
What to Look For
Hydrolyzed peptides, molecular weight under 5000 Daltons. Third-party testing for purity.
Realistic Expectations
Supports skin health but does not replace retinoids or sunscreen.
