4 Common Quality Issues of Silicone Hair Scalp Brushes
In the global personal care products market, silicone hair scalp brushes have been a popular product in hair salons, maternal and child communities, and personal care. However, there are generally four major quality issues for the global personal care products market: flaking, deformation, odor, and cracking for the quality of the silicone hair scalp brushes. These quality issues not only directly affect the quality of the personal care products but also become the key factors for brand reputation and foreign trade orders for the global personal care products market. As a professional supplier for the quality of the silicone hair brush products, with more than 15 years of experience in R&D and production for the quality of the silicone hair brushes, Beaut-lohas.com has been able to provide standardized quality for the silicone hair brushes, eliminating the common quality issues for the global personal care products market and delivering high stability and high compliance quality for the B-end users.
I. Flaking Issue: Causes and Solutions
Problem Causes
The most frequently reported quality issue of silicone hair scalp brushes is flaking, which mainly comes from uncontrolled factors in three links of silicone hair brush production:
- Raw materials: Small plants use recycled silicon materials and low-purity industrial-grade raw materials of low molecular cross-linking degree, which are likely to flake off on the surface;
- Vulcanization: Low temperature and insufficient vulcanization time mean that silicone materials will not be cross-linked to a stable three-dimensional network, and flaking will occur on the surface;
- Process control: Inadequate trimming of burrs, poor surface finishing, or using low-quality release agents will cause particles falling off during use.
Beaut-lohas.com Solutions
- Strict Raw Materials: Only imported high-polymer medical grade/food grade silicone are used at Beaut-lohas.com, with no recycled material or industrial additives. All raw materials are accompanied with original FDA and LFGB certificates. Auxiliary materials such as silica fumes and vulcanizing agents are supplied by first-class industrial sources.
- Two-Step Vulcanization Process: A newly developed 120℃ pre-vulcanization + 180℃ deep vulcanization two-step process ensures that molecules are fully crosslinked, increasing tensile strength by 40% and achieving a dense surface with no pores.
- Three-Level Surface Treatment: Products are treated with three levels of automatic deburring, grinding, and dust-free cleaning, with a surface roughness of Ra ≤ 0.4μm, eliminating burrs and falling risks.
- Factory Inspection: 300 reciprocating friction tests are performed on each batch without any signs of flaking or fuzzing, meeting the latest EU RoHS and China GB 4806.16-2025 standards.
II. Deformation Issue: Breakthrough in Structural Stability and Weather Resistance
Problem Causes
Long-term contact with hot water, shampoo, ultraviolet rays, or extrusion and pulling of hair scalp brushes made of silicone material are likely to cause bristles to collapse, handles to bend, or rebound to fail. The fundamental causes of hair brushes made of silicone material deforming are as follows:
- The aging resistance of materials is poor. General silicone material has low heat resistance, tends to soften at temperatures above 70℃, and causes fatigue due to a humid and hot environment;
- The design structure of hair brushes made of silicone material has defects. The bonding between hair brushes and handles is degumming or deformed at high temperatures. The structure of hair brushes made of silicone material is too thin;
- Vulcanization is unbalanced. Insufficient vulcanization causes a high permanent deformation rate, while over-vulcanization causes brittleness.
Beaut-lohas.com Solutions
- Integrated molding technology: LSR liquid silicone injection molding technology is used, so there is no need for glue or splicing. High-temperature degumming and deformation are completely eliminated.
- A special humid heat resistant formula is developed, with antioxidant and ultraviolet stabilizers. SGS 85℃/85%RH damp heat aging test for 500 hours, attenuation rate of tensile strength is only 8.3% compared to 20% of the general industry.
- Structural mechanics optimization:The brush head has an arc air cushion structure, the root of the bristles is thickened, and the hardness is accurately controlled at 45±5A. It rebounds within 1 second after pressing, with no deformation after long-term use.
- Extreme verification: The product has passed 500 times of 121℃ high-pressure steam sterilization test, with no bending of the handle or collapse of the bristles, suitable for high-frequency disinfection in hair salons.
III. Odor Issue: Non-toxic, Odorless and Low VOC Control
Problem Causes
The pungent smell of fresh silicon hair scalp brushes and sour smell after long-term use are common quality problems for silicon hair brushes, mainly due to:
- Vulcanization residues: The residues of vulcanization agents and catalysts are volatilized, leading to pungent smells;
- Low molecular precipitation: The quality of silicon is poor, with a lot of volatiles such as D4, D5, which are released at high temperatures, leading to odors;
- Pollution mixing: Poor production environment, poor quality of raw materials, or inferior quality of color masters and inks.
Beaut-lohas.com Solutions
- Platinum vulcanization system: Using food-grade platinum instead of the conventional peroxide vulcanization system, no by-products, no odor residue, meeting the FDA food contact requirements.
- Secondary vulcanization deodorization: After deep vulcanization, the product is placed in a constant temperature oven at 200℃ for secondary vulcanization for 2-4 hours. The product is completely free of low molecular volatiles. The VOC content is ≤0.5g/100g.
- Dust-free purification production: Using a 100,000-class dust-free workshop, the raw materials, semi-products, and finished products are stored separately to prevent cross-contamination. The color master is food-grade, non-odor, and heavy metal dyes are forbidden.
- Dual-sensory + instrument detection: The finished products pass off the shelf for food-grade products, no any odor. The products pass the GC-MS gas chromatography test, no harmful substances volatilize. The products pass the EU LFGB odor test.
IV. Cracking Issue: Strength Improvement and Stress Elimination
Problem Causes
Edges of silicone hair scalp brushes, roots of bristles, and joints of handles tend to crack, which is one of the most troublesome quality problems for silicone hair brushes. The underlying incentives for this problem are as follows:
- Stress concentration: The mold is made with right angles and edges, which causes stress concentration in the mold and cracks during external force;
- Over/under vulcanization: Excessive vulcanization makes the material brittle and crack with slight force, while insufficient vulcanization makes it lack sufficient strength;
- Rapid cooling: Rapid cooling causes cracks in the material during cooling.
Beaut-lohas.com Solutions
- Mold optimization design: The rounded corner transition and thickened stress area are used, and the mold is polished to a mirror finish to eliminate stress concentration. The size is accurately controlled by a coordinate measuring instrument, with a tolerance of ±0.05mm.
- Precise vulcanization control: SPC statistical process control is used, and temperature, pressure, and time are monitored in real time. The product is vulcanized properly, with a CPK value of ≥1.33.
- Gradient cooling process: The product is cooled step by step after molding, eliminating internal stress, improving crack resistance, and preventing sudden cold and heat.
- Strength test: The product has undergone a 100,000 times bending test, a 5kg tensile test, and has no cracks or breaks at the root and edge of the bristles, with a service life of over 3 times that of ordinary products.
V. Beaut-lohas.com: Full-Chain Quality Control, Building an Industry Quality Benchmark
Beaut-lohas.com, as a professional silicone personal care factory, always adheres to the concept of putting quality in the core position and technology in the driving position. Meanwhile, it has built six lines of quality control from raw materials to finished products:
- Incoming inspection: Each batch of raw materials will be tested for purity, hardness, and environmental protection. Unqualified products will not be placed in storage;
- First article confirmation: Full-size and full-performance inspection of the first article of each mold and each batch. Only after it is qualified can mass production be started;
- Process inspection: Sampling inspection of appearance, size, and hardness every hour;
- 100% finished product inspection: 100% appearance inspection, size measurement, and function testing;
- Performance sampling inspection: Aging resistance, temperature resistance, antibacterial, and non-toxic tests are mandatory for each batch;
- Shipment re-inspection: Checking packaging, labels, and certification reports to ensure the consistency of goods and orders.
Based on the above system, the silicone hair scalp brushes provided by beaut-lohas.com perfectly solve the four major problems of silicone hair brush quality, which are flaking, deformation, odor, and cracking. With our professional experience in the manufacture of silicone hair brushes, our products are now exported to more than 30 countries and regions, including Europe, America, Japan, South Korea, Southeast Asia, and so on. They are becoming long-term partners of hair salons, maternal and infant brands, and cross-border e-commerce. In the current price war, beaut-lohas.com still adheres to the principle of “uncompromising quality and traceable cost” and provides B-end customers with OEM silicone hair brush customization services, small-batch flexible production, and one-stop certification services, which helps customers develop high-reputation and high-repurchase best-selling silicone hair scalp brushes.
Conclusion
The competition of quality in silicone hair scalp brushes is actually a comprehensive strength competition in terms of raw materials, process, and product quality. As a professional supplier of silicone hair brush, beaut-lohas.com solves the pain points of the industry through technological innovation and guarantees product quality through standardized production, not only providing high-quality FDA silicone hair brush and LFGB silicone hair brush for the market but also promoting the upgrade of the entire field of silicone hair care products towards high quality, high compliance, and high durability. For buyers, choosing beaut-lohas.com is to win a safe supply chain with no quality risks and service risks, as well as to win a high ground of product quality in the intense competition of the market for silicone hair scalp brushes.
