The purple pigment is an Indian straightening additive for dyed hair, mix it with the straightener and it prevents any change of color in the hair that is dyed, light, gray, etc. and the hair is preserved with the exact shade that was before the straightening. In addition, the substance eliminates unwanted yellow / orange color in the hair that comes from the sun's rays that meet the color of the hair.
Sold for professional use only. Read the instructions before use.
A bottle contains 150 ml.

User manual:

For every 100 grams of slip, add between 13 and 20 grams of pigment as needed and mix together with the slip.