Proteins & peptides
Quinoa protein
Also listed as hydrolyzed quinoa, quinoa protein
A plant protein used like keratin or silk: it coats hair to make it feel stronger and smoother. Cosmetic, temporary, plant-based.
Limited evidenceTypical strength: Usually under 1%
What it is
Hydrolysed quinoa protein is broken into small peptides that bind to the hair surface, marketed as a plant-based alternative to animal proteins. Its effect is the same kind of temporary conditioning: less frizz, easier combing, a feeling of stronger strands.
How strong is the evidence?
Limited evidenceOnly ingredient-maker lab testing supports the conditioning claims. No evidence it affects hair growth or health.
What it's used for, checked
Smoother, more manageable hair
Holds upTypical protein-conditioner effect.
Repairs damage from colour or heat
UnprovenCoats damaged areas temporarily.
Works well with
- silk-protein
- keratin
Who should be careful
- Very low risk.