To kill lice eggs with RID, the shampoo must be applied to dry hair, rinsed with water and worked with a fine-toothed comb. The brand name is designed by Bayer to kill head lice and remove their eggs from hair and soft furnishing in preventing re-infestation, according to the manufacturer.
The shampoo is applied to dry hair and left for no longer than 10 minutes before warm water is added and the whole head is shampooed, says WebMD. The hair must then be rinsed thoroughly and the damp hair divided into sections. The RIDvantage Lice Comb - or any fine-toothed comb - is then worked through the hair one strand at a time to remove any lice and eggs that may be attached; viable eggs are typically found close to the scalp, according to WebMD. Bayer further recommends the application of RID Lice & Egg Comb-Out Gel to each strand to aid in the removal of the eggs. RID Home Lice, Bedbug & Dust Mite Spray may be used on soft furnishings that may have come into close contact with the infected person's head.
RID Lice Killing Shampoo is a dry shampoo containing two active ingredients proven to kill lice: piperonyl butoxide and pyrethrum extract. Pyrethum is a natural compound extracted from chrysthanemum flowers and toxic to lice, according to WebMD.