Talc is a common silicate mineral with a chemical composition of Mg3Si4O10(OH)2. In the Mohs hardness tester, the hardness of talc is 1, which is the softest mineral known. The color of talc is white, dark green, light yellow, etc. It is also often mixed with other minerals such as serpentine and calcite. Gai County, Liaoning Province, China is an important producer of high quality talc.
In 1894, a pharmaceutical company in the United States researched and developed the world's first baby-specific product, a talcum powder containing talc as a main ingredient, effectively reducing the incidence of diaper rash in infants. The main ingredient of talcum powder is talcum powder, which not only absorbs sweat and oil, but also refreshes the skin, and helps to relieve itching, reduce the incidence of lice and keep the skin comfortable.
In cosmetics, the most commonly used mineral raw material is talc. Finely ground talc is one of the main raw materials for foundations. Its texture is extremely soft, and it can be added to cosmetics to make the product more delicate. However, talc powder from some areas may contain asbestos, which is carcinogenic. Therefore, talcum powder used in cosmetics and talcum powder must be finely ground and sterilized and subjected to rigorous testing.
In recent years, the safety of talcum powder for cosmetics in talcum powder has caused widespread concern in society. Was this talcum powder that began to be used in the "Shen Nong's Herbal Classic" in the Eastern Han Dynasty really harmful?
Is talcum powder harmful? See what countries say -
Talc is often used as a lubricant, absorbent, filler, anti-caking agent, sunscreen, etc. in cosmetics, and is widely used in various cosmetics, especially powder cosmetics.
As talc raw materials are accompanied by asbestos-like impurities, and asbestos has been recognized as a carcinogen in the world. Therefore, in order to avoid the corresponding use risks, the former State Food and Drug Administration has made provisions to regulate powdered cosmetics and their raw materials. Asbestos determination method requires that all products that apply for special-purpose cosmetic health administrative license or non-special-purpose cosmetics have a talc powder raw material in their formula, and the reporting unit shall submit a test report of asbestos impurities in the product when the product is declared or filed. . At the same time, the “Requirements for Raw Materials for Talc Powder for Cosmetics†was issued, stipulating that “asbestos should not be detected in talc powderâ€, and “the powder should be kept away from the nose and mouth during the production and use of powdered productsâ€.
"Hygienic Standards for Cosmetics" (2007 edition) and "Technical Specifications for Cosmetics Safety" (2015 edition) list "talc (hydrated magnesium silicate)" as a cosmetic limited component, which is stipulated that it can be used for children under 3 years old. Powdered products and other products, and stipulates that when used in "powdered products for children under 3 years of age", the label should be marked "should keep the powder away from the child's nose and mouth". At the same time, the above two specifications have listed "asbestos" as a banned component and are not required to be used as cosmetic raw materials.
The "Technical Specifications for Cosmetics Safety" (2015 edition) also added "asbestos" as a harmful substance in cosmetics, the limit is "not detectable", and the corresponding inspection method is standardized in the physical and chemical testing method.
The national standard "talc powder" (GB/T15342-2012) also requires "no detectable" asbestos minerals for "talc powder for cosmetics".
The Expert Committee of the China Spice and Fragrance Cosmetics Industry Association pointed out that when choosing talc powder as a cosmetic raw material, cosmetics companies must strictly abide by relevant regulations. According to the existing relevant regulations, under normal, reasonable and foreseeable conditions of use, the products can be considered safe and will not cause harm to human health.
The Australian government website Furphies scientifically explains the raw materials of cosmetic talcum powder and quotes international research data, indicating that there is insufficient evidence to prove that talc for cosmetics is associated with ovarian cancer.
The Australian Cancer Research Council also issued a statement stating that asbestos may cause cancer, but modern cosmetic talcum powder does not contain asbestos.
The National Cancer Institute (NCI) Physician Data Interrogation (PDQ) Screening and Prevention Editorial Board believes that there is insufficient evidence to demonstrate that talc exposure is associated with an increased risk of ovarian cancer.
PDQ is the total data source for NCI cancer data, and the PDQ Cancer Information Digest is written by the PDQ Screening and Prevention Editorial Board, while keeping track of the latest literature developments. On February 4, 2016, the latest review reviewed a number of findings and found that the evidence for determining whether talc exposure was associated with an increased risk of ovarian cancer was not sufficient. Therefore, there is insufficient evidence to suggest that talc exposure is associated with an increased risk of ovarian cancer.
The American Cancer Society (ACS) believes that for women, even if this risk really increases, it is very small.
On November 17, 2014, ACS released the latest explanation on the risk of talc cancer, and found that the research on the relationship between female ovarian cancer and talcum powder is not consistent. Some reports indicate that talc has a slight increase in the risk of ovarian cancer, while other reports indicate that talc does not increase the risk of ovarian cancer. Some case-control studies have found that very low levels of talc increase the risk of ovarian cancer, but this type of research relies on recalls of talc used many years ago, leading to biased research.
At the same time, two large prospective cohort studies did not find a link between talc and increased risk of ovarian cancer. According to this, for female individuals, even if the risk really increases, it is very small. Related research in this area continues.
On February 25, 2016, Singapore's Straits Times interviewed doctors, experts and related professionals. According to local doctors, talcum powder is widely used in daily products, including cosmetics, deodorants and silty foods. Elaine Lin, Senior Consultant, Department of Oncology, International Cancer Research Centre, Singapore, noted that the evidence for talc and ovarian cancer is not convincing.
On February 25, 2016, the Israeli Ministry of Health said: “To judge whether a disease is caused by exposure to a specific substance is made by scientific tools and professional institutions rather than by the court. Many clinical studies have examined the use of talcum powder and ovarian cancer. Potential associations, but never confirmed. The National Cancer Society said there is no evidence that talcum powder is used in the perineum to cause ovarian cancer. In addition, there is no evidence that the use of talc is associated with cancer. Talc in the world cosmetics The industry is recognized as an ingredient that can be used. It is important to remember that it is for external use only. Currently, the Ministry of Health does not have any advice on the use of talc."
On February 24, 2016, the British CTPA (British Beauty, Cosmetics and Fragrance Association) issued a statement. The statement pointed out that CTPA could not comment on the details of the US related talc case, but was deeply disappointed and surprised by the media's report on the relevance of the case to cancer. This is contrary to the long-standing international scientific research results on talc. Long-term research has shown that there is no correlation between cosmetic talcum powder and cancer.
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