Background
Shampoo is a hair care product used for the removal of oils, dirt, skin particles, dandruff, environmental pollutants and other contaminant particles that gradually build up in hair. The goal is to remove the unwanted build-up without stripping out so much sebum as to make hair unmanageable.
Composition of shampoos
Shampoo is generally made by combining a surfactant, most often sodium lauryl sulfate and/or sodium laureth sulfate with a co-surfactant, most oftencocamidopropyl betaine in water to form a thick, viscous liquid. Other essential ingredients include salt (sodium chloride), which is used to adjust the viscosity, apreservative and fragrance.[9] Other ingredients are generally included in shampoo formulations to maximize the following qualities. pleasing foam ease of rinsing minimal skin/eye irritation thick and/or creamy feeling pleasant fragrance low toxicity good biodegradability slight acidity (pH less than 7) no damage to hair repair of damage already done to hair
Many shampoos are pearlescent. This effect is achieved by addition of tiny flakes of suitable materials, e.g. glycol distearate, chemically derived from stearic acid, which may have either animal or vegetable origins. Glycol distearate is a wax. Many shampoos also include silicone to provide conditioning benefits.
Hair Coloring Market
Hair coloring is currently a globally accepted fashion phenomenon. From the young generation with playful attitude towards hair coloring to the older generation who hide their gray hair, hair coloring products have been consumed by both men and women. To meet the customer demand and to further enhance the product, research has been done to improve the coloring affects and to minimize the damage to the hair.
In the market, several different kinds of hair coloring products are available. Hair coloring can be applied through coloring shampoos or hair dyes. The hair coloring products can be categorized in