NYDA Express is a German-made treatment for head lice and nits, featuring a physical mode of action through dimethicone oils. The 50ml pump spray formula effectively eliminates lice, nymphs, and eggs in a single application by blocking their breathing system. The product works through a physical mechanism using silicone oils (dimethicone) that penetrate and block the breathing system of lice and nits. It should be stored below 25°C and kept away from heat sources due to flammable ingredients. The formula is well-tolerated, scientifically proven, and approved for use in infants and pregnant/breastfeeding women. For external use only, avoid contact with eyes and mucous membranes. Includes a special comb for application.