Pyrethrin-piperonyl butoxide is available in a 0.33% shampoo or shampoo and conditioner marketed as R&C Shampoo and Conditioner and Pronto Shampoo.
Pyrethrin is derived from the Chrysanthemum flower. Piperonyl butoxide acts synergistically to increase the effectiveness of the pyrethrin.
- Apply the product on dry hair.
- Leave on the hair for 10 minutes.
- Shampoo the hair. The product is then washed off.
- Repeat treatment after 7-10 days.
More information about how permethrin and pyrethrin-piperonyl butoxide work.