Shampoos are generally formulated as mildly acidic with a pH ranging from 4 to 6.
The corresponding conditioner is then formulated to be more acidic with a pH ranging from 3.5 to 5.0.
Why does this matter for your hair?
As pH falls hair constricts and becomes less porous, i.e. your hair retains moisture much better and is shinier. This means that as you clean your hair, the lower the pH of the final product used in the process, the better your hair cuticle is sealed off.
What if you don't want to use a shampoo and conditioner in the same line?
There are a couple of simple solutions:
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By Heather Katsonga-Woodward
I was a natural hair blogger and mixtress living between London & Chicago from 2012 to 2017. I always thought I was 4C but some say 4B; images below - you decide! Heather xx