> citrus is acidic and why the hell would I want anything acidic on my scalp? Because your skin is acidic - indeed it has a protective acid mantle [1]. The que

> citrus is acidic and why the hell would I want anything acidic on my scalp? Because your skin is acidic - indeed it has a protective acid mantle [1]. The question you should actually be asking yourself is why would you want anything alkaline (like soap & sodium lauryl sulphate detergents) on your skin. [1] https://en.wikipedia.org/wiki/Acid_mantle https://en.wikipedia.org/wiki/Acid_mantle