Hydrolysed Wheat Protein
Hydrolysed wheat protein is a common protein derivative in haircare, valued for its ability to strengthen, moisturize, and repair hair.
What is Hydrolysed Wheat Protein?
Hydrolysed wheat protein is a water-soluble protein derived from wheat. It is created through a process called hydrolysis, where wheat proteins are broken down into smaller peptide chains and amino acids by the action of enzymes, acids, or alkalis. This reduction in molecular size allows the protein fragments to readily penetrate the hair shaft or form a film on its surface. The INCI (International Nomenclature of Cosmetic Ingredients) name for this ingredient is Hydrolyzed Wheat Protein or, for its quaternized form, Hydroxypropyltrimonium Hydrolyzed Wheat Protein.
Historically, proteins have been recognized for their restorative properties in hair and skin. Wheat protein, in particular, gained popularity in haircare due to its accessibility, cost-effectiveness, and beneficial amino acid profile, which includes cysteine, a key amino acid in keratin, the primary protein of hair.
How Hydrolysed Wheat Protein Works on Hair and Scalp
Hydrolysed wheat protein primarily functions as a conditioning, strengthening, and moisturizing agent for hair. Its smaller molecular weight allows some of it to absorb into the hair cortex, reinforcing the hair structure from within. Other fragments, particularly larger ones not fully hydrolysed, can deposit on the hair's surface, forming a protective film.
On the hair shaft, this film can help to smooth the cuticle, reducing porosity and improving shine and manageability. By filling in gaps along the cuticle, it can lessen friction between strands, which aids in detangling and reduces breakage caused by combing or brushing. The film also provides a certain degree of thermal protection by helping to absorb and distribute heat more evenly when styling tools are used.
Its humectant properties mean it can attract and retain moisture from the environment, ensuring the hair remains hydrated and supple. This is particularly beneficial for dry, brittle, or damaged hair, as it helps restore elasticity and prevent further moisture loss.
For the scalp, hydrolysed wheat protein is generally non-irritating and can contribute to a healthy scalp environment by supporting the skin barrier. While its primary benefits are for the hair strand itself, a healthy scalp is fundamental for healthy hair growth.
Hydrolysed Wheat Protein Benefits
- Strengthens Hair: Hydrolysed wheat protein penetrates the hair shaft, reinforcing its internal structure and reducing the likelihood of breakage, making it beneficial for weak or chemically treated hair.
- Improves Elasticity: By attracting and retaining moisture, it helps restore the hair's natural elasticity, which minimizes brittleness and makes hair more resilient to styling damage.
- Enhances Shine and Smoothness: It forms a protective film on the hair cuticle, smoothing its surface, which reflects light more effectively and results in increased shine and a softer feel.
- Reduces Porosity: By filling in gaps in the hair cuticle, it helps to even out hair porosity, which can improve the hair's ability to retain moisture and lead to more consistent conditioning.
- Provides Lightweight Conditioning: Unlike some heavier conditioning agents, hydrolysed wheat protein offers effective conditioning without weighing down the hair, suitable for fine and thin hair types.
- Aids in Damage Repair: It helps to repair existing damage by temporarily bonding to weakened areas of the hair, offering a smoother, healthier appearance and feel to compromised strands.
Who Benefits Most from Hydrolysed Wheat Protein?
Hydrolysed wheat protein is particularly beneficial for individuals with:
- Damaged or Weak Hair: Hair that has been compromised by chemical treatments (coloring, perming, relaxing), heat styling, or environmental stressors often suffers from a weakened internal structure. Wheat protein helps reinforce these bonds.
- Fine or Thin Hair: Its lightweight nature means it can provide volume and strength without causing buildup or weighing down delicate strands.
- Dry or Brittle Hair: The humectant properties help to draw moisture into the hair, improving hydration and flexibility.
- Color-Treated Hair: It can help to prolong color vibrancy by improving the hair's ability to retain moisture and preventing cuticle damage that can lead to color fade.
- Frequent Heat Stylers: The protective film can offer a degree of thermal protection, reducing damage from blow-drying, flat ironing, or curling.
Who Should Avoid Hydrolysed Wheat Protein?
While generally well-tolerated, individuals with a diagnosed wheat allergy or gluten sensitivity should exercise caution. Although topical application on hair is unlikely to cause a systemic reaction, there remains a theoretical risk, particularly if there are open sores on the scalp or if the product is ingested accidentally. For those with severe sensitivities, patch testing is advisable, or opting for protein alternatives derived from other sources (e.g., rice, soy, pea) may be preferred.
Common Concentrations and Product Categories
Hydrolysed wheat protein is typically included in haircare formulations at concentrations ranging from 0.5% to 5%. At lower concentrations, it acts more as a conditioning agent, providing surface benefits like shine and smoothness. At higher concentrations, particularly in reconstructive treatments, its strengthening and reparative properties become more pronounced.
It is a versatile ingredient found across a wide array of haircare products, including:
- Shampoos and Conditioners: To provide daily conditioning, strengthening, and moisture.
- Leave-in Treatments and Serums: For continuous protection, frizz control, and styling benefits.
- Hair Masks and Deep Conditioners: Used in higher concentrations for intensive repair and hydration.
- Heat Protectant Sprays: To form a barrier against thermal damage.
- Styling Products: Such as mousses or gels, to add body, hold, and strength.
- Hair Growth Shampoos & Conditioners: Formulations designed to support a healthy scalp and hair environment often include proteins to strengthen new and existing hair.
As a widely recognized and effective ingredient, hydrolysed wheat protein remains a staple in formulations aimed at improving the health, strength, and appearance of hair.
Find these ingredients in Watermans products
- Wheat Amino Acids — you will find this ingredient in our Heat Protection Spray.
Did you know?
- Hydrolysis, used to create hydrolysed wheat protein, literally means to break down with water.
- Wheat proteins are similar to the proteins naturally found in human hair, allowing them to integrate well.
- Ancient Egyptians used wheat extract in hair treatments as early as 3000 BC.