The researchers exposed hamster cells – including those from the mammary gland – to aluminum salts in vitro. The results show that the metal not only penetrates cells, but also rapidly causes genomic instability in them, according to the French newspaper The world.
The study was carried out by a group of researchers from the Fondation des Grangettes, the Hirslanden Center for Oncology and Hematology at the Clinique des Grangettes and the University of Oxford, led by the Swiss André-Pascal Sappino and Stefano Mandriota.
The biologist Mandriota and the oncologist Sappino had already shown in 2012 that human mammary cells put into culture and exposed to aluminum in vitro suffered a genetic modification.
In another study by the same researchers, published in 2016, all mice exposed to aluminum salts developed tumors, some of which were “very aggressive,” recalls the French newspaper. West France.
These aluminum salts, indicated on packaging as “aluminum chloride”, “aluminum chlorohydrate”, “aluminum chloride” or “aluminum zirconium” are used to block sweat ducts and reduce the amount of sweat emitted. french newspaper The Parisian.
For its part, the Federation of Beauty Companies (Fébea), the professional union of cosmetics in France, defends the use of aluminum salts highlighting the consideration of the Scientific Committee for Consumer Health (SCCH) to the European Commission, which “Considers safe the use of aluminum in antiperspirants, whether in spray or in another format, in toothpaste and lipstick in concentrations of 10.60%, 6.25%, 2.65% and 0, 77% respectively ”, he explains The Parisian. That is, the proportions normally used in this type of products. For manufacturers “the aluminum in antiperspirants is not absorbed by the skin or stored, but is eliminated in clothing, by natural peeling of the superficial horny layer and during washing”
In 2011, the French National Agency for the Safety of Medicines and Health Products (ANSM) concluded that there was no evidence of a relationship between exposure to aluminum through the skin and the development of cancer, recalls The world. However, the ANSM recommended limiting the concentration of aluminum in cosmetic products to 0.6%, and not using products containing aluminum just after shaving or on broken skin, as absorption is stronger in these cases.
For those who believe that alum stone, very present in the hygiene sections of organic food stores, is an alternative solution, it is actually a natural aluminum salt, he warns The Parisian.