I know a lot of people like to do pre-treats with oils. For me, I use shampoo on my scalp only. I do a pre-treatment on my dry hair as a means of protecting my hair from the shampoo. I coat all of my hair with a conditioner, which are the conditioners that I tried and hated, or with a clarifying conditioner, apply the shampoo mixed w/ a little distilled water in an applicator bottle to my scalp and let it sit for a while (2-5 minutes) or I'll do a light scalp massage. For me I get fewer tangles, a clean scalp without my hair being/feeling stripped by poo. Then I proceed w/ my other treatments (protein cond, moisturizing cond, etc)