product of the week #3

hey guys, so once again i am doing a product of the week. this weeks product is shampoo!
so im sure we all know what shampoo is. its a substance that we apply to our hair during a shower and it cleans it. there are many different types of shampoo to match with the many different types of hair- dry, greasy, thin and thick. what shampoo is made for is to remove oils, dirt, dandruff ect from the scalp. but what ingredients are used to create shampoo, what are we really putting on our hair?
i searched up "what is shampoo made up of" and in wikipedia they gave me this result-

Shampoo is generally made by combining a surfactant, most often sodium lauryl sulfate or sodium laureth sulfate, with a co-surfactant, most often cocamidopropyl betaine in water to form a thick, viscous liquid. Other essential ingredients include salt (sodium chloride), which is used to adjust the viscosity, a preservative and fragrance.^[17] 


i also found out that water is the main product water. about 70%-80% of shampoo is in fact water.
another ingredient is detergents ( aka surfactants) and these are the cleaning substances in shampoo. surfactants connect with a surface. basically they trap the dirt and once the shower water hits the scalp, the dirt gets washed away with the shampoo.
most shampoos ive used normally have a foamy look to it, expecialty when mixed with water. this is because foam boosters are added. these substances called alkanolamides, are added and they decide the amount of foam and the size of the bubbles. also thickeners are added to thicken the shampoo itself so it isnt a liquid, but more of a gel.
perservatives are also added to some shampoos as well as some conditioning substances.
 so now that we know what shampoo is made of, how is it made?
1. compounding- large amounts of shampoo is made here in a factory. the shampoo can be heated or cooled to help combine all the ingredients.
2. quality control check-  this is basically when a sample of shampoo is tested. it is tested on apperence and on quality.
3. filling- this is when the shampoo is added to the bottles and they are shipped off to wherever they are needed.

so thats it for shampoo! its quite simple to understand.
thanks for reading