Hair Coloring 140 Formula 3 Ingredient Wt. % Function Dyes 4.000 Color Aminomethyl propanol 6.000 Alkalizer Oleic acid 6.000 Thickener Propylene glycol 3.000 Solvent Diethylene glycol monoethyl ether 0.200 Solvent Sodium lauryl sulfate 0.050 Surfactant Hydroxyethyl cellulose 0.400 Thickener Fragrance 0.150 Water To 100% Semi-permanent products can be formulated in many different delivery media including thickened liquids, creams, mousses, and foams. Solvents are often required to aid the dissolution of the dyes, which tend to be only slightly soluble in water, and then conditioning actives maybe added to aid the consumer when applying the product through the hair. The product is left on for 15–40 minutes, again to allow the dyes to penetrate the hair, and then rinsed off. Formula 3 offers a sample for a thickened gel in conjunction with this formula are a few of the common dye structures used. Temporary Products Temporary products are designed to last only until the next shampoo, giving the consumer high flexibility to change colors if he/she does not like it or if the color is only required for a single event, such as a party. NHCH2CH2OH OCH2CH2OH NHCH2CH2OH NO2 NHCH2CH2OH NO2 NO2 NH2 N(CH2CH2OH)2 HC Yellow 4 HC Red 3 HC Blue 2
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