The best things about my shampoo bars is they are all natural,  there is no need for plastic packaging and when you are using the correct bar on your hair you should be able to go longer between washes. 
They can help with scalp issues and most people find their hair has more life to it!

Click the link below to read more about shampoo bars:

https://www.dirtyhippie.co.nz/pages/shampoo-bar-help