I found out i had lice yesterday. I was flipping out! It freaks me out and I need to get rid of them FAST!

I would like to do something easy like leaving my hair in a shower cap full of mayonnaise overnight or something but
I need something quick and easy that is 100% effective (I have about a million nits and they are soooo hard to get out by myself)
I need someting that does not do permanent damage to my hair AND is easy to get out of my hair, basically, by the next day (I love my hair)
Please, somebody, help me fast!!!