Add castile soap to a small bowl. Add the grapeseed oil and whisk together.
Add lemon, tea tree, rosemary, and thyme essential oils. Whisk together. (If using on a child under 8, cut the number of drops in half)
Using a funnel, add the mixture to your squeeze bottle.
To use: Shake before using. Add mixture to child’s hair and gently rub in. Put shower cap on child’s head and leave on for at least one hour. Lather mixture and shampoo. Rinse mixture out and comb child’s hair with a nit comb to remove any nits.
You can also use this mixture as a preventative measure by using it regularly as a shampoo.