Question

Hair is naturally about ph7. it is damaged if the ph goes below 3 or above 10. what do you think ph balanced shampoos do

Answer 1

PH balanced shampoos are designed to maintain the natural pH level of hair, preventing the opening of the cuticle and protecting hair from damage. They work by ensuring that the pH level doesn't go too low (acidic) or too high (alkaline).

Step-by-step explanation:

PH balanced shampoos are formulated to match the naturally slightly acidic pH of hair, which is around pH 7. These shampoos aim to keep hair's pH from dropping below 3 or rising above 10, both of which can lead to damage. The pH scale ranges from 0 to 14, with values below 7 being acidic and values above 7 being alkaline or basic. Therefore, pH balanced shampoos maintain a pH level that does not significantly alter the natural pH of hair and scalp, preserving the health and integrity of the hair.

When the pH balance of hair is disturbed, it can affect the cuticle, which is the outermost layer of the hair shaft. A pH that is too high or too low can cause the cuticle to open, making the hair prone to damage and dehydration. By maintaining a pH that is close to hair's natural pH, pH balanced shampoos prevent the cuticle from opening unnecessarily, therefore protecting the hair from harsh environmental factors and styling practices that could lead to problems like breakage and dryness.

Answer 2

Human hair and sebum has a pH in the range from 4.5 - 5.0. The natural hair is slightly acidity in nature. Acidic nature of hair assist in preventing fungi and bacteria growth in the hair and scalp, as well it leaves the cuticle closed.

Now, if the hair is too basic in nature i.e. pH > 10, it will cause the hair cuticle to open. On other hand, too acidic hair will cause the cuticle to contract.

The pH balance shampoo assist in maintaining to pH level to slightly acidic side i.e. ~ 5. This ensures growth of healthy hair.