To remove mayonnaise from hair, simply wash the hair with shampoo as normal. Mayonnaise can be used as a deep conditioner to help dry hair that is thick or to treat an infestation of lice.
To use mayonnaise as a deep conditioner do the following:
Apply mayonnaise and cover the hair
Apply one to two tablespoons of mayonnaise to the scalp and ends of the hair. Use a hair cap to cover the treated hair.
Let it sit
Let the mayonnaise sit for 20 to 30 minutes .
Remove the mayonnaise
To remove the mayonnaise, wash the hair as normal.
Mayonnaise works to remove lice by suffocating them, according to the Minnesota Department of Health. Mayonnaise creates an uninhabitable environment for lice. It makes the hair very slick so the lice have a hard time staying on and will temporarily suffocate them. To treat lice with mayonnaise do the following:
Put mayonnaise on the scalp and leave on overnight
Completely cover the scalp with mayonnaise and cover the head with a cap, making sure all of the hair is tucked in. Leave the mayonnaise on overnight.
Comb and rinse out
Comb through the hair before rinsing out the mayonnaise. Repeat this method every couple of days.