Goal

Clearer skin

What is worth trying for skin?

Hydration, texture and breakouts — what the evidence says, and what you can test yourself.

Research says what works on average. A free account lets you test any of these on yourself for 14 days and see what works for you.

Start free

Supplements and compounds

Ranked by evidence, then by price. A verdict is the research; your 14-day log is the answer.

Collagen peptidesSupplement

HoldEvidence C

Collagen for skin: measurable on instruments, doubtful in the mirror, and mostly seller-funded

$20–40/mo

Verdicts summarise published research at the population level and never claim an effect for you. Safety notes and sources are on every verdict page. Not medical advice.