The pH of shampoo also helps in minimizing irritation to the eyes, enhances the qualities of hair and maintain the ecological balance of the scalp (Baran and Maibah, 1998).
The pH of tested commercial shampoos was found within the preferred range (between 7
and 5) (Tarun et al., 2014) and are presented in Table 2.
The acid balanced values were observed with commercial shampoos (Dove: 6.12, Herbal Essences: 6.04) but the pH of formulated shampoo was found to be nearly neutral (7.02).