The pH measurement reflects the good quality of a shampoo or soap.
The pH is an indicator of the acidity of a medium, measured on a scale from 1 to 14.
A product with a pH of 7 is considered neutral, while a product with a pH below 7 is acidic and a product with a pH above 7 is alkaline.
To have healthy hair, it's important to maintain an appropriate pH. A healthy scalp has a pH between 5.4 and 5.9, and hair has a more acidic pH of 3.67. For comparison: classic soaps have a pH around 10.
Using a slightly acidic shampoo, between 4 and 6, can help maintain the natural balance. Homnès shampoos have a pH between 5.5 and 6.5.
If you have dry or irritated scalp problems, or if your hair is damaged, using a shampoo with an acidic pH can help nourish and protect it. The Homnès nourishing shampoo designed for this purpose has a pH of 6.25, to gently cleanse the scalp while respecting the hair.
It's also important to consider the factors that can raise the pH of hair and damage it, such as relaxers, heat, mechanical treatments and the use of alkaline solutions.
Finally, if you have dandruff, using a Homnès purifying shampoo with a pH around 5.9 will help relieve the issues.
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