Alpha Keratin ●
TL;DR. This ingredient is a protein-based conditioning and film-forming agent, used mainly in hair care to improve feel, reduce breakage, and support smoother fiber alignment. It can also add a temporary strengthening effect by depositing on damaged areas.
What does Alpha Keratin do in a cosmetic formula?
This ingredient is a protein-based conditioning and film-forming agent, used mainly in hair care to improve feel, reduce breakage, and support smoother fiber alignment. It can also add a temporary strengthening effect by depositing on damaged areas.
Is Alpha Keratin clean?
From a clean-beauty perspective, it is generally well tolerated and not a common restricted-list concern. The main caveats are animal-origin traceability, vegan compatibility, and potential impurities from processing if supplier controls are weak.
Is Alpha Keratin sustainable?
This material is typically sourced from animal fiber streams, then purified or fragmented for cosmetic use. It is biodegradable as a protein, but its sustainability profile depends on sourcing transparency, animal-welfare standards, and processing chemistry.
Is Alpha Keratin COSMOS-approved?
It may be permitted under COSMOS-natural when sourced from allowed animal by-products and processed using compliant methods, but eligibility is source-dependent and not automatic. It fits Green Chemistry best when it uses recovered biological feedstock, aqueous processing, and minimal solvent burden.
How does Alpha Keratin work chemically?
The molecule is a cysteine-rich structural protein with coiled-chain regions and disulfide crosslinks that influence strength, adhesion, and film formation on hair fibers. In finished hair formulas, protein actives are commonly used at low levels, often below 5%, and performance depends on molecular size, charge, pH, and compatibility with cationic conditioners.
Last updated 2026-05-13