The purpose of acid shampoos is to return the pH of hair to its original state after perm or dyeing.
Most of them are slightly acidic products, and antibacterial properties will be slightly better than ordinary neutral shampoos.
(Because microorganisms are hard to live in acidic areas)
For the scalp, I think shampoo for scalp care will be more effective on the market. I understand that they prescribe raw materials that are effective for antibacterial properties such as dandruff to keep the scalp healthy....
The content is poor, but I need to study more...
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