Cynatine® HNS

6 min. read

30/06/2026

Planche botanique d'une prêle des champs — Cynatine® HNS, kératine pour cheveux et ongles, BIOLOGYST

Patented Actives · Beauty

Cynatine® HNS

A highly bioavailable patented keratin to naturally strengthen hair and nails.

Cynatine® HNS is a patented soluble keratin of natural origin, obtained from sheep's wool through a specific hydrolysis process that preserves the sulfur amino acids naturally present in keratin. Unlike conventional keratin, which is often poorly absorbed, Cynatine® HNS is highly bioavailable and easily utilized by the body.

Naturally rich in cysteine, glutamic acid, serine, and other amino acids that make up human keratin, it provides the essential elements for the synthesis and renewal of hair and nails. It acts from within, helping to strengthen the hair fiber and nail structure.

Why did we choose Cynatine® HNS?

Highly bioavailable patented keratin
Natural source of essential sulfur amino acids
Several human clinical studies
International reference for hair and nail health
Excellent tolerance and assimilation

Studied Benefits

Stronger and more resilient hair

Studies show an improvement in hair fiber strength, a reduction in breakage, and better hair quality after several weeks of supplementation.

Better hair density

Cynatine® HNS helps improve the volume, density, and overall appearance of hair, especially in people with weakened hair.

Stronger nails

Clinical trials report a decrease in nail fragility, a reduction in splitting, and an improvement in their hardness and growth.

Action from within

By directly providing the constituents of keratin, Cynatine® HNS supports the natural renewal mechanisms of hair and nails and helps maintain their structure.

Study	Key results
Beer et al., 2014	Significant improvement in hair strength and reduction in breakage after 90 days of supplementation.
Glynis Ablon et al., 2018	Increased shine, hair quality, and improved nail strength in a randomized placebo-controlled clinical trial.
Cynatine® HNS clinical studies	Improved hair density, hair quality, and reduced nail fragility after several weeks of supplementation.

In summary

Strengthens hair fiber from within
Helps reduce hair breakage
Improves hair density and quality
Promotes stronger and more resilient nails
Provides highly bioavailable keratin rich in sulfur amino acids

Level of scientific evidence

★★★★★High

Several randomized clinical trials in humans
Double-blind placebo-controlled studies
Patented ingredient
Documented efficacy and tolerance

Where to find Cynatine® HNS at BIOLOGYST

Cynatine® HNS is present in Hair & Nail Regenesis. Discover all our patented active ingredients.

Frequently asked questions

What is Cynatine® HNS?

A patented soluble keratin, rich in sulfur amino acids (including cysteine), presented in a water-soluble and standardized form.

Which BIOLOGYST product contains Cynatine® HNS?

It is found in Hair & Nail Regenesis, our formula dedicated to hair and nails.

Is oral keratin scientifically proven?

Cynatine® HNS is a patented keratin, rich in cysteine, that has been studied for several years. In Europe, keratin does not have authorized health claims: in Hair & Nail Regenesis, the recognized benefits – normal hair and nails – are attributed to zinc and selenium.

Scientific reference

Beer C, Wood S, Veghte RH. A Clinical Trial to Investigate the Effect of Cynatine HNS on Hair and Nail Parameters. The Scientific World Journal. 2014;2014:641723.

PubMed — PMID 25386609 · DOI 10.1155/2014/641723

This publication documents the ingredient studied. It does not constitute an authorized health claim in the European Union.