What color is iodophor?

Iodophor is typically brownish to dark brown in color, and some diluted iodophor solutions may appear light brown. This variation in color is primarily related to the concentration and compositional characteristics of the iodophor. A detailed explanation is as follows:

Iodophor is a commonly used topical antiseptic in clinical practice, with povidone-iodine as its main active ingredient. When dissolved in water, this compound forms amorphous complexes, and the inherent color comes from the chemical properties of iodine. In high-concentration iodophor, the higher iodine content results in a darker appearance, often appearing dark brown, which is typical for products intended for disinfection on intact skin. For mucosal disinfection or minor wounds, diluted iodophor is usually applied; the reduced iodine concentration leads to a lighter color, appearing light brown or tea-colored. The color of iodophor may also slightly change during use and storage—for example, after application on the skin, as the solvent evaporates and iodine is slowly released, the color may gradually fade.

When using iodophor, it should be stored sealed and protected from light. Prolonged exposure to air may cause iodine to volatilize, resulting in fading color and a corresponding decrease in disinfecting efficacy.