It is a 0.1% solution of acriflavine in pure glycerin. Acridines are potent antiseptics, and acriflavine, like other acridine derivatives, is effective against both Gram-positive and Gram-negative bacteria. It has the advantage of retaining its activity in the presence of body fluids and pus and is comparatively free from toxic or irritant action. Acriflavine is therefore suitable for the treatment of contaminated or suppurating (weeping) wounds, provided the wound has been thoroughly cleansed. Glycerin is used externally for its emollient effect, and when applied undiluted to mucous membranes or broken skin, it absorbs moisture and enables drugs held in solution to penetrate more readily. It is employed for its hygroscopic action in inflammatory conditions.