— Follow-up to our cuticle repair study, revealing next-level results in gloss, strength, and smoothness.
Hydrolyzed keratin protein has emerged as a preferred solution for individuals desiring sleek, manageable, and frizz-controlled hair. With the increasing market demand for effective hair care solutions, hydrolyzed keratin for hair products has gained significant attention.
As a professional hydrolyzed keratin protein supplier, ZXCHEM continues to deliver premium ingredients tailored to these market needs. While the promise of achieving lustrous, smooth hair through science-backed formulations is enticing—what evidence supports its effectiveness?
This report builds on our previous study focused on cuticle repair using hydrolyzed keratin, which you can review here. In this follow-up, we shift the focus toward broader hair care performance, scientifically evaluating the benefits of hydrolyzed keratin across essential parameters: glossiness, stretching, ease of combing, and smoothness.
Hydrolyzed Keratin Efficacy Series 2.0 – Hair Care Performance
Key Materials and Samples
Test sample: Shampoo containing 5% hydrolyzed keratin liquid (provided by ZXCHEM).
Control sample: Standard shampoo without hydrolyzed keratin.
Hair samples: 3g hair bundles (17 cm, healthy and slightly damaged), pretreated with 14% sodium lauryl sulfate (SLS) to simulate damage.
Other materials: Tap water (37 ± 1°C, flow rate 4 L/min) and 14% SLS solution for pretreatment.
Steps We Took to Evaluate Performance
The experiments were performed in controlled settings (21 ± 1°C, 50 ± 10% relative humidity) using standardized testing protocols:
Step 1：Hair samples were initially treated with 14% SLS solution.
Step 2：Hydrolyzed keratin shampoo (0.1g per gram of hair) was applied, massaged for 1 minute, then rinsed using 37°C water at 4 L/min.
Step 3：Hair containing hydrolyzed keratin protein was combed every 20 seconds during rinsing for detangling assessment.
Five tests were performed:
- Hair gloss test: Evaluated using Skin-Glossymeter GL 200.
- Hair stretching work test: Measured via fibra.one.
- Dry and Wet Combing Test: Assessed combing ease and force in both dry and wet conditions.
- Hair friction work test: Evaluated frictional work using fibra.one.
Test Results
Descriptive statistics of glossiness
| Parameter | Group | Statistical Items | |||||||
|---|---|---|---|---|---|---|---|---|---|
| N | Mean | SE | Min | Max | Difference Value | Change Rate Within the Group (%) |
Inter-group Rate of Change (%) |
||
| Glossiness | Control group – Before processing | 3 | 1.93 | 0.10 | 1.86 | 2.05 | 0.58 | 30.04% | 22.08% |
| Control group – After processing | 3 | 2.51 | 0.06 | 0.06 | 2.57 | ||||
| Sample group – Before processing | 3 | 1.88 | 0.06 | 1.81 | 1.91 | 0.98 | 52.13% | ||
| Sample group – After processing | 3 | 2.86 | 0.11 | 2.77 | 2.98 | ||||
Note 1: The larger the measured value, the higher the gloss of the hair bundle. Note 2: Difference = mean after treatment – mean before treatment Note 3: Rate of change (%) = (mean after treatment – mean before treatment) / mean before treatment × 100% Note 4: Inter-group rate of change (%) = intra-group rate of change in the sample group − intra-group rate of change in the control group
Proven Hair Care Benefits
The results demonstrate that the hydrolyzed keratin liquid delivers significant hair care benefits in all evaluated aspects:
- Gloss Enhancement After Keratin Treatment：Hair treated with liquid keratin showed improved gloss, reflecting its nourishing and restorative effects.
- Enhanced Hair Stretching Ability：Strands demonstrated notably enhanced tensile strength and flexibility after applying hydrolyzed keratin for hair, minimizing breakage.
- Dry Combing Efficiency：The effort needed to brush dry hair decreased substantially, demonstrating improved manageability and conditioning effects.
- Improved Wet Combing Performance：Before-and-after analysis revealed significant reduction in wet combing resistance, confirming its detangling capabilities.
- Enhanced Smoothness：Measured friction between hair fibers decreased considerably, indicating smoother strand surfaces and enhanced control.
As verified in this study, hydrolyzed keratin from a professional hydrolyzed keratin manufacturer in China demonstrated exceptional performance in improvin glossiness, stretching, manageability, and smoothness.
Conclusion: Proven Performance, Trusted Results
Hydrolyzed keratin protein enhances hair’s shine, strength, flexibility and softness, effectively transforming hair’s overall health and appearance.
Hydrolyzed keratin for hair serves as an essential component in numerous hair treatment and maintenance products. As a fundamental protein for hair restoration, it delivers crucial nourishment for both daily care and repair.
As a trusted hydrolyzed keratin protein supplier, we specialize in supplying keratin peptide ingredients for superior hair care. Rich in cysteine, our products help improve hair strength and durability. Hydrolyzed keratin used in hair care shows powerful nourishing, conditioning and repairing effects while effectively preventing hair damage.
With scientifically proven results and stable product performance, ZXCHEM has become China’s leading keratin raw material supplier. It meets the diverse needs of the global market and helps create healthier, shinier hair.
Sourcing hydrolyzed keratin from China
When choosing a hydrolyzed keratin supplier in China, compare the selected grade, batch certificate of analysis, traceability and performance in your application. Ask for a sample and clarify packaging and export documentation before ordering.
Contact ZXCHEM with your application and purchasing requirements. Where a factory or manufacturer is involved, confirm the actual production site and its role in the supply chain.