Between 8.5 and 9. Permanent colours are alkaline.
Waves haven't a pH.
The color is red at pH = approx.7; the color of cabbage juice depends on the pH of a solution.
Each value of pH has specific color on this chart.
pH - around 4.8 color - dark brown
Ph is color.
Waves haven't a pH.
I believe the pH differs in haircolor by brand and whether it's permanent, demi permanent, semi permanent, or temporary.
There is permanent hair color and semi-permanent hair color. _____________ Demi permanent and temporary are also known as non permanent hair color.
Yes, it's fine to apply permanent color over semi permanent.
what is the importance of restoring the ph levels of the hair after permanent colouring sevices
pH of perm lotion is 11
The color is red at pH = approx.7; the color of cabbage juice depends on the pH of a solution.
Yes.
Each value of pH has specific color on this chart.
a pH indicator
That depends on the pH.
9.0 to 10.0