Algin, also known as sodium alginate, is commonly used in cosmetics and personal care products due to its hydrating and soothing properties. It is also used as a thickening agent in cosmetic formulations, improving the texture and viscosity of the products it is added to. Hydrolyzed algin is another form of algin obtained by breaking down larger molecules into smaller fragments, which enhances its solubility and ability to penetrate the skin. Algin is typically a fine, white powder and is often used in combination with other natural ingredients such as glycerin and aloe vera. It is found in a wide range of cosmetic products, including facial masks, moisturizers, and body lotions. The chemical formula of Algin is (C6H7NaO6)n.
Origin
Algin is extracted from brown seaweed through a process called "acid precipitation" The seaweed is harvested, washed, and ground into a fine powder. Then, an acid solution is added to the powder to separate algin from other compounds in the seaweed. Finally, the algin is isolated and dried into a powder for use in cosmetics and other applications.
Safety profile
Algin is a safe ingredient as it is derived from natural sources and has a long history of use in the cosmetic industry. It is generally well-tolerated by the skin and is non-comedogenic, so it does not block pores or cause acne. Algin is also vegan and halal. A patch test is not typically required but it is always safer, especially in case of sensitive skin.