1. Ensure the stability of raw material quality
Incoming material inspection avoids problems such as hair loss, breakage or discomfort in finished makeup brushes due to raw material defects by testing indicators such as bristle material (such as cleanliness, length, and toughness of animal hair or synthetic fiber), ferrule size accuracy (diameter tolerance within ±0.1mm), and wooden handle appearance defects (no scars or holes).
For example, when inspecting bristles, ensure no odor or impurities, and the bristle volume is controlled within the range of ±0.7g from 5g to 20g, and ±1.0g above 20g, which will directly affect the powder holding capacity and application effect of the makeup brush.
2. Reduce production costs and risks
By eliminating unqualified raw materials (such as ferrules with substandard glue content or brush heads with insufficient bristles), the waste caused by rework and scrapping during the production process can be reduce. If inferior bristles flow into the production line, it may cause customer complaints or product recalls, resulting in brand reputation and economic losses.
3. Ensure compliance and safety
Incoming material inspection needs to verify whether the raw materials comply with national quality inspection standards (such as GB/T 1.1-2020) and e-commerce platform requirements (such as CNAS/CMA certification reports). For example, test whether the glue ingredients contain harmful substances to avoid the risk of skin allergies. For export makeup brushes, they must also comply with international trade regulations (such as packaging labels, fumigation certificates, etc.).
4. Optimize supplier management
Inspection data can be used as a basis for supplier evaluation, high-quality suppliers can be screened out and their continuous improvement can be promoted.
For raw materials with frequent problems, suppliers can be required to provide rectification plans to improve the efficiency of supply chain collaboration.
5. Support standardization of production process
The incoming material inspection standard is closely linked to the subsequent process (such as glue amount ±0.05g, hair shape consistency ) to ensure each production process is controllable. For example, the ferrule diameter tolerance needs to be controlled within ±0.1mm, otherwise the brush head and handle may not match during assembly.
Incoming material inspection avoids problems such as hair loss, breakage or discomfort in finished makeup brushes due to raw material defects by testing indicators such as bristle material (such as cleanliness, length, and toughness of animal hair or synthetic fiber), ferrule size accuracy (diameter tolerance within ±0.1mm), and wooden handle appearance defects (no scars or holes).
For example, when inspecting bristles, ensure no odor or impurities, and the bristle volume is controlled within the range of ±0.7g from 5g to 20g, and ±1.0g above 20g, which will directly affect the powder holding capacity and application effect of the makeup brush.
2. Reduce production costs and risks
By eliminating unqualified raw materials (such as ferrules with substandard glue content or brush heads with insufficient bristles), the waste caused by rework and scrapping during the production process can be reduce. If inferior bristles flow into the production line, it may cause customer complaints or product recalls, resulting in brand reputation and economic losses.
3. Ensure compliance and safety
Incoming material inspection needs to verify whether the raw materials comply with national quality inspection standards (such as GB/T 1.1-2020) and e-commerce platform requirements (such as CNAS/CMA certification reports). For example, test whether the glue ingredients contain harmful substances to avoid the risk of skin allergies. For export makeup brushes, they must also comply with international trade regulations (such as packaging labels, fumigation certificates, etc.).
4. Optimize supplier management
Inspection data can be used as a basis for supplier evaluation, high-quality suppliers can be screened out and their continuous improvement can be promoted.
For raw materials with frequent problems, suppliers can be required to provide rectification plans to improve the efficiency of supply chain collaboration.
5. Support standardization of production process
The incoming material inspection standard is closely linked to the subsequent process (such as glue amount ±0.05g, hair shape consistency ) to ensure each production process is controllable. For example, the ferrule diameter tolerance needs to be controlled within ±0.1mm, otherwise the brush head and handle may not match during assembly.
Incoming material inspection ensures the functionality and safety of makeup brushes from the source through multi-dimensional quality control (physical properties, chemical composition, appearance standards), while reducing the operational risks of the makeup brush factory.
The following is the standardized process and key quality standards for incoming inspection of makeup brushes
1. Inspection process
Preparation
- Check the purchase order with the "Bill of Materials" (including material description) provided by the supplier
- Prepare inspection tools: electronic scale (accuracy 0.1g), digital caliper (accuracy 0.01mm), colorimeter (ΔE≤1), 3M tape (test printing adhesion)
- Establish AQL sampling standards: usually use GB/T 2828.1-2012 II inspection level, CR=0, MA=0.65, MI=1.5
Appearance inspection (visual inspection)
- Lighting conditions: 1000±200Lux D65 standard light source;
- Inspection angle: 45° tilt observation, 360° rotation;
- Inspection frequency: first piece + 5pcs per hour
Dimension measurement
- Use non-contact image measuring instrument to detect key dimensions:
- Bristle length tolerance ±0.3mm
- Ferrule diameter deviation ≤±0.1mm
- Brush handle concentricity ≤0.15mm
Functional test
- Hair fall rate test: 500g weight hangs the bristles, ≤3 hairs fall off within 10 seconds
- Elastic recovery test: compress the bristles to 50% of the original length, and the recovery rate after release is ≥95%
Chemical safety testing
- Heavy metal migration test (lead ≤ 10ppm, cadmium ≤ 0.5ppm)
- pH test range: 5.5-8.5 (eye brushes need to be ≤ 7.5)
2. Key quality standards
Bristles
- Natural hair: SC animal quarantine certificate is required, hair scale integrity ≥ 90%
- Synthetic fiber: single filament diameter 0.08-0.15mm, cross-section must present a petal-shaped structure
- Planting density: ≥ 120 /cm² (foundation brush), ≥ 80 /cm² ( powder brush)
Ferrules
- Copper and aluminum pipes: thickness ≥ 0.3mm, no rust after 72h salt spray test
- Electroplating layer thickness: nickel layer ≥ 5μm, chromium layer ≥ 0.3μm
Wooden handles
- Moisture content: 8%-12%, FSC certification required
- Coating adhesion: 100-grid test: 3M tape peeling off area ≤5% after tearing
- Thickness of a single brush head protective cover ≥ 0.15mm PET material
- Color box edge ≤ 0.5mm, color difference ΔE ≤ 1.5
3. Defective products
- For critical defects (such as slight color difference), the deviation is allowed to be within 2%
- For major defects (such as loose structure), the whole batch will be detained and the 8D reporting process will be initiated
- Batches with excessive microorganisms need to be sterilized by EO (residual amount ≤ 10μg/g)
