Back to Ingredient Dictionary

AMMONIUM IODIDE

Description

Ammonium iodide is a potent inorganic compound with the chemical formula NH4I. This white crystalline salt is composed of ammonium cations (NH4+) and iodide anions (I-). In skincare formulations, ammonium iodide serves as a source of iodine, which has antimicrobial and anti-inflammatory properties. The compound is water-soluble and can be easily incorporated into various skincare products, including serums, toners, and creams.

Ammonium iodide's primary function in skincare is as an antiseptic and disinfectant. It helps combat acne-causing bacteria and can aid in wound healing. The iodine released from this compound also supports thyroid function when absorbed through the skin, potentially benefiting overall skin health. However, it's crucial to use ammonium iodide in controlled concentrations, as excessive iodine exposure can lead to skin irritation or thyroid imbalances.

Formulators must consider the pH of the final product when incorporating ammonium iodide, as it can affect the stability and efficacy of other ingredients. Additionally, this compound may cause staining on fabrics and should be used with caution in leave-on products. Despite these considerations, ammonium iodide remains a valuable ingredient in targeted skincare formulations, particularly those aimed at addressing acne and bacterial skin conditions.