why do all shampoos of any colour produce white form.?

Answer 1

The dyes added to shampoos are usually only there at VERY low levels (typically less than 0.001%). When the shampoo foams, internal light reflection within the bubbles further reduces the apparent dye colour.

It is possible to produce coloured foams but the dye load needs to be increased dramatically (up to about 0.05%). The problem with this is there is then enough dye in the shampoo to actually stain. This level of dye is actually used in some high foam CAR shampoos because customers think that the colour strength is somehow related to the detergent strength (WRONG!).

You can also play some neat tricks with fluorescent dyes and optical brighteners - which activate ONLY when struck by UV light and so may be light in colour in the shampoo but higher in colour as they catch more light when dilute.

Answer 2

Shampoo is a hair care product used for the removal of oils, dirt, skin particles, environmental pollution and/or other contaminant particles that gradually build up in hair.

The active ingredient in nearly all shampoos is Sodium Laurate Sulfate, Shampoo when lathered with water is an anionic surfactant. Sodium Laurate Sulfate produced white form with water.

Answer 3

I think this is because of the nature of the detergents. The detergents are made to exhibit a certain color when not in contact with water, but during dissolution in water, the colors are designed to disappear and all we see is white color. And remember... white contains all the colors of the spectrum. And remember, if you see the soap bubbles formed against sunlight, you will observe a rainbow texture.

Answer 4

now a days every shampoo is made of conditioner,i think that is colourless that's why when it is mixed with water it produces white colour

Answer 5

shampoos have salts of higher fatty acids which when come in contact with water produce insoluble precipitate.these precipitate are white in colour in form of scum or foam

Answer 6

Very good question.
Actually shampoo is made of ditergent, a chemical that is used to make foam with water, (obviously it is not the same that we use to wash the cloths ...). And this created foam is white.

Answer 7

thats because shampoos contain alkalis which tend to be soapy in nature and produce white foam. these shampoos also contain salts which produce insoluble precipitates when in contact with water.

Answer 8

the dyes in the shampoo are diluted by the addition of water and gases in the formation of the bubbles. we then perceive the foam as white compared to the original (conentrated) shampoo.

Answer 9

the shampoo dyes are jst used to giv a pleasant color wher as the actual action is cos of the ingredients present for cleansing... u can acatully mix a bit of various shampoos in water a nd see the color turin to white in al lthe bowls...mean tht al lthe used dyes are soluble in water......the actaul ingrdients for cleanzing are same in all shampooos and the dyes are water soluble...so the white color of foam..for all shampoos

Answer 10

hi!
i think because all shampoos are soap based thats why they produce white form.