Pigment Red 4
Updated
Pigment Red 4 is classed chemically as a monoazo colour. It conforms to the formula:
Purpose
Functions: Hair Dyeing. We have not yet rated this ingredient because we have not had a chance to review the research on it.
Rating
NOT RATED
Category
INCI Purpose
HAIR DYEING
Alternative Names
At a Glance
Article
References