Chelating Agents for Cosmetics 

Chelating agents, also known as sequestrants, are chemical compounds designed to trap and remove heavy metals and other contaminants from water and cosmetic formulas. Their effectiveness is directly related to the pH of the environment in which they are used, as each chelating agent has an optimal range of activity depending on its pH.

Antioxidants: Heavy metals can interact with oxygen present in the air, generating reactive species that can alter cosmetic products. Elements such as iron or copper can be introduced into formulations as part of the raw materials used, the water in the formulation itself, the ambient atmosphere, or the equipment used. Given their pro-oxidant nature, it is essential to minimize the concentration of these metals to maintain the stability of the cosmetic product.

Enhancers of the preservation system: The combination of chelating agents with preservative ingredients allows for reducing the concentration of the latter in the formula. Chelating agents for cosmetics enhance the product’s preservation capacity, thereby improving its safety. Moreover, by being able to reduce the concentration of the preservative, the possibility of sensitization is also reduced, thus improving the tolerability of the final product.

Stabilizers of peroxidation: In formulations containing peroxides, such as hair bleaching formulations, the addition of chelating agents prevents their decomposition.

Reducers of water hardness: In water used for regular household hygiene, the presence of minerals such as calcium and magnesium can reduce the foaming capacity of surfactant systems, which could affect their effectiveness. Chelating agents bind to these water minerals, thereby improving the performance of hygiene products.