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Study of dyeing properties of semipermanent dyestuffs for hair
Author(s) -
Ballarin B.,
Galli S.,
Morigi M.
Publication year - 2007
Publication title -
international journal of cosmetic science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 62
eISSN - 1468-2494
pISSN - 0142-5463
DOI - 10.1111/j.1467-2494.2007.00359.x
Subject(s) - dyeing , solvent , ionic bonding , adsorption , chemistry , diamine , chemical engineering , diffusion , polymer chemistry , hair dyes , polar , molecule , organic chemistry , thermodynamics , ion , physics , astronomy , engineering
Synopsis In this article we have evaluated some of the factors (pH, solvent composition and dye structure) that influence the dyeing of hair with dyes from direct semipermanent categories. These dyes, in fact, have been used more and more in cosmetic industry over the last years, due to their lesser aggressiveness vs. hair fibres. Two different dye classes are investigated: phenylene diamine (HC), well known for their low molecular weight and their small size, and a series of Basic dyes, characterized by the same ionic charge (positive) but with different sizes and different polar groups in the molecule. pH and dyebath composition result critical factors controlling the diffusion and adsorption process.