Wow, I missed that. Thanks Val.
Yeah, in 3 weeks, you should have washed no less than 6 times. anywhere from 2-4 times a week is best for healthy scalp and hair.
If you don't wash often, your hair tends to get slick and a bit oily. This will make it hard to tangle and knot up
updated by @baba-fats: 07/22/15 12:11:10PM