The testing methods for cosmetic raw materials mainly include the following aspects:
Efficacy testing: The efficacy of cosmetics is closely related to the ingredients, so it is necessary to conduct efficacy testing on the ingredients. This can ensure that the raw materials have the expected efficacy, thereby ensuring the overall effect of the cosmetics. The testing items include oily raw materials, surfactants, polymer compounds, moisturizers, preservatives, powdery raw materials, and coloring agents.
Toxic and harmful substance detection: Cosmetics and their raw materials may contain toxic and harmful substances, such as preservatives, sunscreens, hormones, antibiotics, and heavy metals. These substances may pose a threat to human health. The detection methods include spectrophotometry, thin-layer chromatography, gas chromatography, gas chromatography-mass spectrometry, high-performance liquid chromatography, etc. For example, the detection methods for phthalate esters (PAEs) and dioxane are gas chromatography-mass spectrometry and gas chromatography-mass spectrometry, respectively.
Heavy metal detection: Heavy metal detection methods include UV visible spectrophotometry and electrochemical methods (such as anodic stripping voltammetry). Inductively coupled plasma emission spectroscopy is also a commonly used detection method, which analyzes heavy metal content by decomposing samples at high temperatures and measuring characteristic spectral lines.
Other testing methods: Local toxicity and systemic toxicity testing of cosmetics and their raw materials are also very important. Local toxicity testing includes skin and eye irritation/corrosiveness, skin sensitization, skin phototoxicity, and skin photoallergic reactions. Systemic toxicity testing involves acute toxicity, genetic toxicity, repeated dose toxicity, and reproductive and developmental toxicity.
Testing process and standards:
Delivery inspection: Before leaving the factory, the inspection department of the production plant shall inspect the products batch by batch according to the product standards. Only those that meet the standards can leave the factory. The recipient can also conduct inspections according to standard regulations.
Type inspection: At least once a year, and when there are significant changes in raw materials, processes, or formulas, type inspection should also be conducted. The type inspection items include routine inspection items and non routine inspection items.
Sampling: Sampling shall be conducted on a batch of products with the same process conditions, varieties, and production dates, and the sampling plan shall be executed in accordance with relevant standards.
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How to detect cosmetic raw materials?
The testing methods for cosmetic raw materials mainly include the following aspects:
Efficacy testing: The efficacy of cosmetics is closely related to the ingredients, so it is necessary to conduct efficacy testing on the ingredients. This can ensure that the raw materials have the expected efficacy, thereby ensuring the overall effect of the cosmetics. The testing items include oily raw materials, surfactants, polymer compounds, moisturizers, preservatives, powdery raw materials, and coloring agents.
Toxic and harmful substance detection: Cosmetics and their raw materials may contain toxic and harmful substances, such as preservatives, sunscreens, hormones, antibiotics, and heavy metals. These substances may pose a threat to human health. The detection methods include spectrophotometry, thin-layer chromatography, gas chromatography, gas chromatography-mass spectrometry, high-performance liquid chromatography, etc. For example, the detection methods for phthalate esters (PAEs) and dioxane are gas chromatography-mass spectrometry and gas chromatography-mass spectrometry, respectively.
Heavy metal detection: Heavy metal detection methods include UV visible spectrophotometry and electrochemical methods (such as anodic stripping voltammetry). Inductively coupled plasma emission spectroscopy is also a commonly used detection method, which analyzes heavy metal content by decomposing samples at high temperatures and measuring characteristic spectral lines.
Other testing methods: Local toxicity and systemic toxicity testing of cosmetics and their raw materials are also very important. Local toxicity testing includes skin and eye irritation/corrosiveness, skin sensitization, skin phototoxicity, and skin photoallergic reactions. Systemic toxicity testing involves acute toxicity, genetic toxicity, repeated dose toxicity, and reproductive and developmental toxicity.
Testing process and standards:
Delivery inspection: Before leaving the factory, the inspection department of the production plant shall inspect the products batch by batch according to the product standards. Only those that meet the standards can leave the factory. The recipient can also conduct inspections according to standard regulations.
Type inspection: At least once a year, and when there are significant changes in raw materials, processes, or formulas, type inspection should also be conducted. The type inspection items include routine inspection items and non routine inspection items.
Sampling: Sampling shall be conducted on a batch of products with the same process conditions, varieties, and production dates, and the sampling plan shall be executed in accordance with relevant standards.