In general, hair dyes include colors, modifiers, antioxidents, alkalizers, soaps, ammonia, wetting agents, fragrance, and a variety of other chemicals used in small amounts that impart special qualities to hair (such as softening the texture) or give a desired action to the dye (such as making it more or less permanent).
| Hair color & intermediates | |
| Product Name | CAS No. | 
| 1,2,4-benzenetriamine dihydrochloride | 615-47-4 | 
| 1,4-n-hydroxyethyl-2-nitro-1,4-phenylene diamine (hc violet bs) | 85301-77-0 | 
| 2,4-diamino anisole sulfate | 39156-41-7 | 
| 2,4-diamino phenol sulfate | 74283-34-4 | 
| 2,4-diamino toluene | 95-80-7 | 
| 2,4-diaminophenoxyethanol dihydrochloride | 66422-95-9 | 
| 2,4-diaminophenoxyethanol sulfate | 70643-20-8 | 
| 2,4-dinitro phenol | 51-28-5 | 
| 2,5-diamino toluene | 95-70-5 | 
| 2,5-diamino toluene dihydrochloride | 615-45-2 | 
| 2,5-diamino toluene sulfate | 615-50-9 | 
| 2,6-diamino pyridine | 141-86-6 | 
| 2,6-diamino toluene | 823-40-5 | 
| 2,6-diamino toluene sulfate | N/A | 
| 2,6-dinitro-4-cresol | 609-93-8 | 
| 2-amino-3-hydroxy pyridine | 16867-03-1 | 
| 2-amino-4-methyl-6-nitro phenol | 6265-07-2 | 
| 2-amino-m-cresol | 2835-97-4 | 
| 2-chloro-1,4-phenylene diamine sulfate | 6219-71-2 | 
| 2-methyl resorcinol | 608-25-3 | 
| 2-nitro-p-phenylene diamine | 5307-14-2 | 
| 2-nitro-p-phenylene diamine sulfate | 68239-83-8 | 
| 3,4-diamino toluene | 496-72-0 | 
| 3-amino-2-chloro-6-cresol | 84540-50-1 | 
| 3-amino-p-cresol | 2836-00-2 | 
| 3-nitro-2-chloro-6-cresol | 39183-20-5 | 
| 3-nitro-4-amino phenol | 610-81-1 | 
| 3-nitro-4-fluoro aniline | 364-76-1 | 
| 3-nitro-4-methyl phenol | 2042-14-0 | 
| 4,5-diamino-1-(2-hydroxyethyl)-1h-pyrazole sulfate | 155601-30-2 | 
| 4-[n-(hydroxypropyl)amino]-3-nitro phenol | 92952-81-3 | 
| 4-[n-(β-hydroxyethyl)amino]-3-nitro phenol | 65235-31-6 | 
| 4-amino-m-cresol | 2835-99-6 | 
| 4-chloro resorcinol | 95-88-5 | 
| 4-chloro-m-phenylene diamine | 5131-60-2 | 
| 4-chloro-o-phenylene diamine | 95-83-0 | 
| 4-nitro-m-phenylene diamine | 5131-58-8 | 
| 4-nitro-m-phenylene diamine sulfate | N/A | 
| 4-nitro-o-phenylene diamine | 99-56-9 | 
| 5-(n-hydroxyethyl)amino-o-cresol | 55302-96-0 | 
| 5-amino-4-chloro-o-cresol | 110102-86-8 | 
| 5-amino-o-cresol | 2835-95-2 | 
| 5-amino-o-cresol sulfate | 183293-62-1 | 
| 5-nitro-o-cresol | 5428-54-6 | 
| 6-amino-m-cresol | 2835-98-5 | 
| 6-chloro-2-(n-ethyl)amino-4-nitro phenol | 131657-78-8 | 
| 6-chloro-2,4-dinitro phenol | 946-31-6 | 
| 6-chloro-2-amino-4-nitro phenol | 6538-09-4 | 
| hc blue 2 | 33229-34-4 | 
| hc orange 1 | 54381-08-7 | 
| hc red 1 | 2784-89-6 | 
| hc red 13 | 94158-13-1 | 
| hc red 3 | 2871-01-4 | 
| hc red 7 | 24905-87-1 | 
| hc red b 54 | 65235-31-6 | 
| hc yellow 2 | 4926-55-0 | 
| hc yellow 4 | N/A | 
| hc yellow 5 | 56932-44-6 | 
| meta amino phenol | N/A | 
| m-phenylenediamine dihydrochloride | 541-69-5 | 
| m-phenylenediamine sulfate | 541-70-8 | 
| n,n-bis-(2-hydroxyethyl)-p-phenylenediamine sulfate | 54381-16-7 | 
| o-chloro-p-phenylene diamine | 615-66-7 | 
| o-chloro-p-phenylene diamine sulfate | 61702-44-1 | 
| p-amino phenol hydrochloride | 51-78-5 | 
| p-amino phenol | 123-30-8 | 
| p-phenylene diamine dihydrochloride | 624-18-0 | 
| p-phenylene diamine sulfate | 16245-77-5 | 
| p-phenylene diamine white flake | 106-50-3 | 
 
| Hair color & intermediates | |
| Product Name | CAS No. | 
| 1,2,4-benzenetriamine dihydrochloride | 615-47-4 | 
| 1,4-n-hydroxyethyl-2-nitro-1,4-phenylene diamine (hc violet bs) | 85301-77-0 | 
| 2,4-diamino anisole sulfate | 39156-41-7 | 
| 2,4-diamino phenol sulfate | 74283-34-4 | 
| 2,4-diamino toluene | 95-80-7 | 
| 2,4-diaminophenoxyethanol dihydrochloride | 66422-95-9 | 
| 2,4-diaminophenoxyethanol sulfate | 70643-20-8 | 
| 2,4-dinitro phenol | 51-28-5 | 
| 2,5-diamino toluene | 95-70-5 | 
| 2,5-diamino toluene dihydrochloride | 615-45-2 | 
| 2,5-diamino toluene sulfate | 615-50-9 | 
| 2,6-diamino pyridine | 141-86-6 | 
| 2,6-diamino toluene | 823-40-5 | 
| 2,6-diamino toluene sulfate | N/A | 
| 2,6-dinitro-4-cresol | 609-93-8 | 
| 2-amino-3-hydroxy pyridine | 16867-03-1 | 
| 2-amino-4-methyl-6-nitro phenol | 6265-07-2 | 
| 2-amino-m-cresol | 2835-97-4 | 
| 2-chloro-1,4-phenylene diamine sulfate | 6219-71-2 | 
| 2-methyl resorcinol | 608-25-3 | 
| 2-nitro-p-phenylene diamine | 5307-14-2 | 
| 2-nitro-p-phenylene diamine sulfate | 68239-83-8 | 
| 3,4-diamino toluene | 496-72-0 | 
| 3-amino-2-chloro-6-cresol | 84540-50-1 | 
| 3-amino-p-cresol | 2836-00-2 | 
| 3-nitro-2-chloro-6-cresol | 39183-20-5 | 
| 3-nitro-4-amino phenol | 610-81-1 | 
| 3-nitro-4-fluoro aniline | 364-76-1 | 
| 3-nitro-4-methyl phenol | 2042-14-0 | 
| 4,5-diamino-1-(2-hydroxyethyl)-1h-pyrazole sulfate | 155601-30-2 | 
| 4-[n-(hydroxypropyl)amino]-3-nitro phenol | 92952-81-3 | 
| 4-[n-(β-hydroxyethyl)amino]-3-nitro phenol | 65235-31-6 | 
| 4-amino-m-cresol | 2835-99-6 | 
| 4-chloro resorcinol | 95-88-5 | 
| 4-chloro-m-phenylene diamine | 5131-60-2 | 
| 4-chloro-o-phenylene diamine | 95-83-0 | 
| 4-nitro-m-phenylene diamine | 5131-58-8 | 
| 4-nitro-m-phenylene diamine sulfate | N/A | 
| 4-nitro-o-phenylene diamine | 99-56-9 | 
| 5-(n-hydroxyethyl)amino-o-cresol | 55302-96-0 | 
| 5-amino-4-chloro-o-cresol | 110102-86-8 | 
| 5-amino-o-cresol | 2835-95-2 | 
| 5-amino-o-cresol sulfate | 183293-62-1 | 
| 5-nitro-o-cresol | 5428-54-6 | 
| 6-amino-m-cresol | 2835-98-5 | 
| 6-chloro-2-(n-ethyl)amino-4-nitro phenol | 131657-78-8 | 
| 6-chloro-2,4-dinitro phenol | 946-31-6 | 
| 6-chloro-2-amino-4-nitro phenol | 6538-09-4 | 
| hc blue 2 | 33229-34-4 | 
| hc orange 1 | 54381-08-7 | 
| hc red 1 | 2784-89-6 | 
| hc red 13 | 94158-13-1 | 
| hc red 3 | 2871-01-4 | 
| hc red 7 | 24905-87-1 | 
| hc red b 54 | 65235-31-6 | 
| hc yellow 2 | 4926-55-0 | 
| hc yellow 4 | N/A | 
| hc yellow 5 | 56932-44-6 | 
| meta amino phenol | N/A | 
| m-phenylenediamine dihydrochloride | 541-69-5 | 
| m-phenylenediamine sulfate | 541-70-8 | 
| n,n-bis-(2-hydroxyethyl)-p-phenylenediamine sulfate | 54381-16-7 | 
| o-chloro-p-phenylene diamine | 615-66-7 | 
| o-chloro-p-phenylene diamine sulfate | 61702-44-1 | 
| p-amino phenol hydrochloride | 51-78-5 | 
| p-amino phenol | 123-30-8 | 
| p-phenylene diamine dihydrochloride | 624-18-0 | 
| p-phenylene diamine sulfate | 16245-77-5 | 
| p-phenylene diamine white flake | 106-50-3 |