Fri-24-04-2015, 09:07 AM
Anywhere from 1%-5%. So for a 500ml bottle of shampoo you might start by adding tar in 5 gram increments until you find something you are happy with. Similarly, you might add your overly tarred shampoo to an unadulterated shampoo until you find something that suits you.
Cheers,
Bill
Cheers,
Bill