hintl / Skincare
Skincare, by the evidence
Skincare ingredients and habits, each scored by the strength of the published research behind it — study counts, participant totals, and the direction of the evidence, not marketing claims.
6items
supplements & habits
15studies
reviewed
5,292participants
across those studies
hintl editorial team / Skincare Desk
Skincare genre desk — research review
For Skincare, the studies with the strongest track record so far are hyaluronic acid (83/100, 4 studies), retinol topical skin (81/100, 3 studies), and niacinamide topical skin (68/100, 4 studies) (hintl Evidence Score, as of September 2026).
Evidence for ceramide and moisturizer is still limited.
Same topic, very different evidence
Even within one topic, how strongly the research backs each option varies widely. Here's what the numbers show.
Ranked by strength of evidence
Tap any item to see the studies behind its score.
83/100
Confidence: high
hyaluronic acid
skin hydration4 studies836 participants
81/100
Confidence: high
retinol topical skin
skin elasticity3 studies4,015 participants
68/100
Confidence: moderate
niacinamide topical skin
skin barrier function4 studies191 participants
59/100
Confidence: moderate
collagen
skin elasticity2 studies170 participants
42/100
Confidence: low
moisturizer
skin barrier function1 study66 participants
39/100
Confidence: low
ceramide
skin hydration1 study14 participants
Evidence Scores are computed mechanically from the published research (PubMed / Semantic Scholar / OpenAlex): study design, participant numbers, and consistency across studies. An LLM is used only to extract study data, never to decide a score.
This is research-based information, not medical advice, and not a diagnosis. Consult a qualified professional about your own situation.