Region — United States. Evidence-first skincare tools.
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Two ways to read the evidence

Pick a tool. Both work the same way we grade everything else — on the published evidence, not the marketing.

Ingredient Compatibility Checker

Which cosmetic actives layer together, and which to keep apart (AM vs PM). Each verdict is tagged by how well-established it is.

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Composition Scanner

Photograph a product's ingredients list and see which actives have published evidence — and how they grade.

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Vallydia

A neutral reference and a lawful-lane shop. 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.

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