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Theme
Emerald Hirudin serum in a sculptural studio setting
Ancient wisdom. Modern science.

Radiant Skin,Naturally.

A fragrance-free hirudin serum, formulated at 2% active concentration and available in three sizes.

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The ingredient

A rare bioactive.
A considered formula.

At the center of every Hirudin & Co. formulation is a rare bioactive with a long research history, presented here in a deliberately concise, fragrance-free serum.

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Family owned and operated, with one purpose: to help.

Hirudin serum bottle in a warm apothecary still life
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Hirudin Skin SerumA considered daily ritual.
Our collection

One formula. Three sizes.

Choose the format that suits your ritual.

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30 ML Hirudin Skin Serum
30 ML · Daily Ritual

Hirudin Skin Serum

The essential introduction. Precision-formulated at 2% active concentration.

$80View details
50 ML Hirudin Skin Serum
50 ML · Mid-Size

Hirudin Skin Serum

Two months of daily ritual at a better per-ml price.

$100View details
Most Popular
100 ML Hirudin Skin Serum
100 ML · Professional

Hirudin Skin Serum

The professional choice. Wholesale and clinic pricing available.

$150View details
The evidence

The testing record.
Openly shared.

Review the supplied third-party testing record, its methods, results, and source limitations.

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Repeated Insult Patch TestEurofins | CRL - 221 completers0 adverse eventsReported under RIPT study conditions, with 221 completers.
Reported finding

No adverse events were reported during the RIPT. Under the study conditions, the test article did not demonstrate potential for irritation or sensitization.

Study context

240 subjects were selected; 221 completed the study, including 109 with self-perceived sensitive skin. These findings describe the study population and conditions.

Explore the studySource reports (ZIP)
Skin Irritation: OECD 439LifeNet Health LifeSciencesReview reportConflicting viability values remain unresolved.
Reported finding

The report's table and conclusion classify the test article as No Category (Non-Irritant).

Study context

This laboratory study used three reconstructed epidermis tissues. The narrative and table report different viability values; that discrepancy remains unresolved.

Explore the studySource reports (ZIP)
Cosmetic Stability StudyEurofins | CRL - supplied report12 weeksIncomplete source: missing final page and blank week-12 preservative-efficacy row.
Reported finding

The supplied report documents a 12-week study under ambient and stress conditions.

Study context

The supplied PDF is missing its stated final page, and its week-12 preservative-efficacy row is blank. It does not establish a complete final stability conclusion.

Explore the studySource reports (ZIP)
Under the conditions of this study, Hirudin Topical Serum did not demonstrate a potential for eliciting dermal irritation or inducing sensitization.
Winston Moy, MDDiplomate, American Board of DermatologyEurofins | CRL, Inc. - Study ECRLNJ2025-0577