Hydrolyzed Wheat Protein
Wheat protein broken into small pieces. One of the most common strengthening proteins in conditioners and leave-ins for textured hair.
About Hydrolyzed Wheat Protein
Hydrolyzed wheat protein is made by breaking down the proteins in wheat into smaller peptides and amino acids. It is one of the most widely used proteins in hair care, appearing in conditioners, deep treatments, leave-ins, curl creams and gels from many brands aimed at textured hair.
The fragments are attracted to the hair surface, where they form a light film that helps strands retain moisture, add body and reduce the limp, overly stretchy feel of hair that has lost protein. Smaller fragments can settle into damaged areas of the cuticle. It is often paired with quaternized versions (such as cocodimonium hydroxypropyl hydrolyzed wheat protein) that cling more strongly because they carry a positive charge.
Who tends to love it: relaxed and color-treated hair, high porosity hair, hair that feels gummy or mushy when wet, and anyone repairing after heat damage. Who should be careful: protein-sensitive hair, which can turn stiff and brittle if protein is in every product, and low porosity hair that already feels firm.
People with a diagnosed wheat allergy or celiac disease sometimes choose to avoid wheat-derived ingredients in leave-on products; if that applies to you, ask your doctor. It is approved for the Curly Girl Method. Our protein-sensitive mode flags it so you can decide.
How our checker rates it
| Mode | Rating | Why |
|---|---|---|
| Curly Girl | OK | No concerns for this mode. |
| Relaxed hair | Good | Protein — helps reinforce chemically weakened hair. Balance it with moisture. |
| Low porosity | Caution | Protein high in the list can leave low-porosity hair stiff. Use protein sparingly. |
| Protein-sensitive | Avoid | Protein — #1 on the list. |
Ratings assume it is listed near the top of the label. After the first preservative or fragrance (likely 1% or less) most cautions soften.
What protein ingredients do
Hydrolyzed proteins, peptides and amino acids that temporarily patch gaps in the cuticle and add strength. Some hair turns stiff or brittle with too much.
Also listed as
- wheat protein
- hydrolysed wheat protein
- hydrolyzed wheat protein (wheat)
Similar ingredients
Sources
Last data update:
- Robbins CR. Chemical and Physical Behavior of Human Hair. 5th ed. Springer; 2012. Reference text on hair structure, surfactants, conditioning agents, protein, heat and chemical treatments.
- Gavazzoni Dias MF. Hair cosmetics: an overview. Int J Trichology. 2015;7(1):2-15. Overview of shampoos, conditioners, silicones, straighteners and their effects on the hair shaft.
- Cosmetic Ingredient Review (CIR). Ingredient safety assessments. Safety assessments for cosmetic ingredients cited on ingredient pages.
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