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A-F grade per outcome, combining overall evidence with goal-specific relevance. A = strong evidence; F = insufficient. Hover a badge for details.
15g
Any time · with food (preferred)
Hydrolyzed collagen peptides (powder)
Topical cosmetic only. Leave-on lactic acid is used at roughly 5-12% (lower for hydration, higher for exfoliation); professional peels use higher strengths. Apply to clean skin, often at night, building frequency as tolerated, with daily sunscreen. There is no oral or systemic dose — it is not ingested. This library does not provide an ingestion protocol.
Evening
Leave-on lotion or serum (≈5-12% lactic acid)
8-12 weeks
8-12 weeks
12 weeks
Throughout
2-8 weeks
8-22 weeks
No synergies listed
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