Skin & Hair

Skin & Hair Evidence Ranking

Within this category, verdicts with higher evidence scores appear first. Verdicts without a score stay lower in the same list.

• C 47 Ingredients claimed to express aquaporin (AQP3). Representative: glyceryl glucoside. Ingredients that are claimed together but whose cited evidence does not confirm AQP3/skin-moisture matching (such as resurrection plant, aloe, trimethylglycine, etc.) are separated as “claimed but evidence not matched.” x Skin moisture
  Evidence is conflicting or limited · based on topical (cosmetic) use · oral use lacks evidence · View verdict →
• C 44 Elastin (hydrolyzed elastin peptides) x skin elasticity and wrinkles
  The evidence is conflicting or limited · View verdict →
• B score not listed Low-molecular-weight collagen (collagen peptides) x Skin hydration and elasticity
  There are many human studies, but most were funded by companies that sell collagen · View verdict →
• C score not listed Glutathione (oral) x Whitening and skin tone
  There are small studies, but they conflict with one another, and no study has ever shown the full path through to "it becomes brighter because you... · View verdict →
• C score not listed Pantothenic acid (vitamin B5) x skin and hair-loss improvement
  The evidence is conflicting or limited · View verdict →
• C score not listed Oral hyaluronic acid x skin moisturization
  The evidence is conflicting or limited · View verdict →
• C score not listed Oral ceramides (rice- and wheat-derived) x skin moisturization and barrier
  The evidence is conflicting or limited · View verdict →
• D score not listed Biotin (vitamin B7) x hair-loss improvement and hair growth
  Human evidence is insufficient or was not confirmed in key trials. · View verdict →
• D score not listed Brewer’s yeast x hair-loss relief and hair
  Human evidence is insufficient or was not confirmed in key trials · View verdict →