Trending skin supplements, graded on the evidence
Collagen, vitamin C, omega-3, astaxanthin, lutein, zeaxanthin, oral hyaluronic acid, and copper — the supplements sold hardest for skin and longevity. Here's the honest version: skin-supplement evidence is thin, so most of these grade C or below. We graded the science, not the marketing.
Every item, with its grade
Each grade traces to the ingredient, its dose, the marketed outcome, and how strong the human evidence actually is. Prescription items (tretinoin, isotretinoin, hydroquinone) are deliberately excluded — those are medications, not supplements.
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Where to buy
Sage + Stone takes no money from graded brands. The buy links above open a plain Amazon search — we currently earn nothing from them. Grades are independent of where (or whether) you buy.
Educational only. Not medical advice. These statements have not been evaluated by the FDA. Not intended to diagnose, treat, cure, or prevent any disease. Grades reflect published effective-dose ranges and the strength of human evidence — they do not test the product. Consult your healthcare provider before starting any supplement. Sage + Stone takes no money from graded brands.