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Hair Care, simply explained
Hydrolyzed keratin is a protein ingredient used to condition dry or damaged-looking hair. You’ll find it in masks, conditioners and styling products designed to care for your lengths and help them feel smoother.
Hydrolyzed keratin is used to condition hair, making it a useful ingredient to look for in a mask or treatment when lengths need extra care.
Hydrolyzed-keratin care may help improve how damaged lengths feel and resist breakage. A conditioner or mask is a simple way to add it to your routine.
Keratin is the structural protein that makes up much of a hair strand. Hydrolyzed keratin is made by breaking that larger protein into smaller pieces called peptides. This process, known as hydrolysis, makes the protein fragments easier to incorporate into shampoos, conditioners, masks and leave-in products.
These fragments are used to condition the hair fiber, with different sizes interacting with its surface and structure. Cosmetic hydrolyzed keratin can come from animal materials such as sheep’s wool; the brand’s sourcing information can clarify the origin of a particular formula.
This ingredient is different from a salon service called a keratin treatment, which describes a complete smoothing process. On an everyday haircare label, Hydrolyzed Keratin identifies the conditioning protein itself.
On the ingredient list: Hydrolyzed Keratin.
Also known as: Hydrolysed keratin, keratin hydrolysate.
Choose one format: a conditioner for regular washes, a mask for a longer care step, or a leave-in made for styling.
After shampooing, apply rinse-out conditioner or mask mainly to the lengths and ends, following the label's timing.
Rinse thoroughly unless the product is specifically a leave-in. Use only the amount your hair needs.
If your hair starts to feel stiff or coated, use the treatment less often and choose a lighter conditioning step between uses.
Pair a protein-conditioning step with moisture and gentle everyday handling.
A moisture-supporting ingredient often found alongside conditioning proteins.
Another conditioning ingredient you may see in your shampoo or treatment.
Choose shampoo for your scalp and let conditioner care for the lengths.
Breaking keratin into smaller pieces changes how it interacts with the hair surface. This helps formulators create conditioning products with different textures and finishes.
Researchers tested different sizes of wool-derived hydrolyzed keratin on chemically relaxed, textured hair. Some reduced breakage in laboratory measurements.
Yes. It is keratin protein broken into smaller pieces for use in cosmetic products.
No. A conditioner containing hydrolyzed keratin is a regular haircare product. A salon smoothing service uses a complete treatment process with its own ingredients, heat steps and precautions.
It can be part of a conditioning routine that improves the feel of damaged lengths. A trim is the way to remove split ends; keep conditioning and handling hair gently afterward.
Hydrolyzed keratin has an established cosmetic conditioning role. The cited fiber study describes laboratory measurements on hair, not permanent repair or hair growth.
2016-07-06
Defines hydrolyzed keratin, its conditioning function and sources assessed for cosmetic use.
2020-10-15 · DOI 10.1111/ics.12663
A study of hydrolyzed keratins of different sizes on textured human hair fibers. It is not a clinical trial of scalp growth or a claim about every retail formula.
2024-08-12
Dermatologist advice on choosing shampoo for your scalp, conditioning your lengths and handling wet hair gently.
Follow your mask's directions and adjust to how your hair feels. You may enjoy an occasional treatment rather than adding a protein-rich product at every step.
It can be animal-derived. Look for a clear vegan statement from the brand rather than assuming the name identifies its source.
Choose a finished product labeled for your hair type or color-treated hair. A conditioner or mask can be a practical way to add the ingredient without changing your whole routine.
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