The evidence quiz

What does your skin actually need?

Find out what the evidence says — in about 60 seconds. Five questions, an honest profile, and the research that backs it. No products, no sales pitch.

Neutral, evidence-graded reference. Not medical advice, diagnosis, or treatment.

Vallydia

A neutral, evidence-graded reference. Information for those who seek it — never promotion.

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This site provides neutral scientific reference and sells only products lawful in your region. Nothing here is medical advice, a recommendation, or an offer to supply unapproved medicines. No dosing or administration is published for research compounds. Cosmetic peptides per Regulation (EC) 1223/2009. Unapproved injectable peptides are neither sold nor advertised in the EU (Directive 2001/83/EC, Title VIII). © 2026 Vallydia.