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An evidence-first ingredient checker. Photograph a product’s ingredients list — we show which actives have published evidence, and how it grades.

The composition scanner

What’s actually in your cream?

Photograph the INGREDIENTS

list on the back (starts with Aqua/Water),

not the front of the pack.

By continuing you agree your photo is sent to Anthropic for reading. It isn’t stored. Privacy

Issue N°01 - The Evidence RegisterEvidence · Provenance · RestraintAnno MMXXVI
An evidence-first skincare reference - and a shop that opens only where the law allows

What actually works on skin - graded on the evidence.

Every ingredient graded A to F on published trials, not marketing. Provenance assayed, conflicts disclosed. We sell only in the lawful lanes.

Read the evidence →Take the 60-second quiz →
§ I - Popular guides

The questions everyone asks, answered on the evidence.

All guides →
The evidence quiz · 60 seconds
What does your skin actually need?
Find out by the evidence →
§ II - The register

205 compounds, each graded A to F.

Open the full register →
GradeCompoundFunction tagsStatus · USAction
A
Niacinamide (Vitamin B3)nicotinamide
Skin & aestheticLawful cosmetic ingredient · CosmeticSoon ↝
A
Hyaluronic Acid (Sodium Hyaluronate)HA
Skin & aestheticLawful cosmetic ingredient · CosmeticSoon ↝
B
Azelaic AcidAzA
Skin & aestheticLawful cosmetic (lower-strength / derivative); prescription at 15–20% · CosmeticFollow ↝
A
Retinol (Vitamin A)vitamin A alcohol
Skin & aestheticLawful cosmetic ingredient · CosmeticFollow ↝
A
Ceramidesceramide NP
Skin & aestheticLawful cosmetic ingredient · CosmeticFollow ↝
B
Bakuchiolmeroterpene
Skin & aestheticLawful cosmetic ingredient · CosmeticFollow ↝
B
Tranexamic AcidTXA
Skin & aestheticLawful topical cosmetic ingredient · CosmeticFollow ↝
+ 198 more, incl. research & longevity peptides →
§ III - The taxonomy

Fourteen fields, tagged not foldered.

§ IV — On method

Graded on evidence. Verified by assay. Free of conflict.

Ⅰ
A grade you can trust

A letter for each compound × outcome, drawn from trials and meta-analyses — with effect size and every caveat spoken plainly. The preclinical never poses as proven.

Ⅱ
Provenance, assayed

There is no production yet, so there are no batch assays to show. When there is, this is the commitment: independent testing, each result verifiable by its task number, and a blind retest on request. Until then this block describes an intention, not a practice.

Ⅲ
Free of interest

One person writes these grades: Yakiv Bilenko, who also runs Vallydia and sells its serums. There is no independent reviewer, and none is promised. What can be checked instead is the record: our own copper peptide is graded B, the competing peptides B, B and C. We do not grade upward what we profit to sell.

§ V - The Journal

The evidence, examined.

Not quick answers - method, regulation, and the odd viral claim put to the test. Where the popular guides answer, these show the working.

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.

Vallydia - The Evidence Register | Evidence-graded skincare