This shampoo bar is a must! Because I have thick, dry, and wirey curly hair, I used to rinse but not shampoo my hair but twice a week until I started swimming regularly and needed to shampoo the chlorine out immediately. I was worried at first about using shampoo so frequently, but this is by far the best shampoo I've ever used. It is now my ride or die.
It also lasts a good while, and is a superior alternative if you are looking to reduce your plastic waste (keep in mine you can also take it on carry-on without it counting as a liquid!!!).
I'm moving to the UK soon and frankly don't know what I'm going to do without this. I definitely stocked up!