Beauty

Keratin (Solubilized)

Also known as: Cynatine HNS

Evidence

Hair and nail protein in absorbable form. Provides building blocks for keratin structures.

Primary uses

Hair strength
Nail strength
Keratin support

How it works

Provides keratin building blocks
May strengthen hair/nails
Cysteine-rich protein

Dosage

Typical range: 500mg daily
Timing: Any time
With food: Optional
Duration: 3+ months for effects
Special populations: Weak hair/nails

Forms

Capsules

Safety

Common side effects

Rare

Contraindications

None

Evidence notes

Emerging, less evidence than biotin

Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.

Related in Beauty

BiotinB
Horsetail ExtractC

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.