The products used in this experiment were shampoo products. We used Alberto V05, Herbal Essence, Axe Shampoo, and Cantu.
The pH level of Herbal Essence is about 7.0.This product has a neutral pH level.
With Alberto V05 we figured that the pH level was 5.0 so this product has a low amount of acid.
Another shampoo product we used was Axe Shampoo. The pH level was about 5, which means this product has a low level of acid.
And last, we tested Cantu. It had a pH level of 4.7 which is neutrally acidic.
In conclusion, the best shampoo out of these four would be Herbal Essence because it has a balanced pH level. Actually, the best pH level for shampoo should be between 5 and 7. Cantu would probably be the worse to put in your hair out of these other products...ask a stylist!
sources: googleimages & shagginsalon.com