Can You Use an Expired Head Lice Treatment?

Head lice treatments are made with insecticides. Some are registered and can be used for a single application, but a second treatment may be necessary if live lice are found. To avoid spreading head lice, check all household members for infection and get them treated. It is always best to avoid touching the scalp and eyes, as this can cause irritation. Children should also avoid sharing their combs, brushes, and bedding.

To apply lice treatment, first wash your hair and dry it thoroughly. Avoid using electrical heating devices. It is advisable to apply lice treatment before bedtime. Once the head lice treatment is dry, you should shampoo the hair and use a lice comb to remove any dead lice or nits.

If you notice that the lice shampoo is no longer effective, replace it immediately. Using expired shampoo will make the lice resistant to the product. It may also cause your hair to look dull and dirty. To prevent this problem, it is best to use a new lice treatment. For best results, you should not use an expired shampoo for at least 24 hours.

There are many home remedies for head lice that do not contain pesticides. Many of them are based on natural ingredients that mimic the molting process of head lice. The ingredient lists include tree oils, enzyme proteins, and essential oils. These natural ingredients are not proven to kill lice and there are no clinical studies to back up their claims.