Does Washing Your Hair Twice Do Anything?

I wash my hair 2 to 3 times a week and i use a lot of styling products in my hair when i style it , also my hair is naturally a bit oily , so i find i have to wash my hair twice when i shampoo it. It really depends on how often you wash your hair and what hair type you have as to how many times you should shampoo your hair.If you wash your hair every day i would say no, only shampoo it once because you will be stripping all the natural oils out of you hair and it will make it dry. If you wash your hair less often and it is a bit oily you might need to wash it twice..you will know because it wont lather up properly on the first wash, that is the best indication that your hair will need a second wash.