Evaluating products.
How do I choose adjunctive products for skin health?
Shelf order follows the honest grading: collagen peptides lead as the beauty category's one genuinely-studied ingredient (elasticity and hydration endpoints, modest, honestly sized), omega-3 carries the anti-inflammatory base (the library's shared product — heart, kidney, brain, and skin pages alike), and D3 closes as the factory's own product — the vitamin this organ manufactures, supplemented because sunscreen rightly blocks the reaction. All three sit behind the SPF bottle, the moisturizer, and the prescription tier — the hierarchy every chapter of this page has kept. The products below are educational examples — not medical recommendations.
Hydrolyzed Collagen Peptides
by Various (type I & III bovine) · The Collagen Signal
Score
The beauty aisle's one genuinely studied ingredient: hydrolyzed collagen trials (2.5–20 g daily) report improved skin elasticity and hydration — small samples, surrogate endpoints, industry funding, honestly graded as modest. Take alongside dietary vitamin C (the cofactor collagen synthesis requires — our vitamin-c page's chemistry). Marine-sourced versions carry shellfish allergy risk — check the label. Not a complete protein (no tryptophan — our protein page's note): a supplement, not a meal replacement. 🚨 Expect hydration- and elasticity-endpoint changes over 8–12 weeks, not wrinkle removal — the honest size of the evidence.
Runner-ups
Nordic Naturals Ultimate Omega
by Nordic Naturals · The Anti-Inflammatory Base
Thorne Vitamin D-1,000
by Thorne · The Sunshine Loop