How come shampoo's come in different colours but the lava is always white?

Question

How come shampoo's come in different colours but the lava is always white?

Answer 1

The lather produced by shampoo and soap is mostly air, just a thin membrane of soap making up the bubbles. Think about how much lather you get from just a small blob of shampoo - most of it is air. Light striking the mass of lather gets scattered evenly, so it appears white. There usually isn't enough pigment in the thin film of soap forming the bubbles to absorb enough light of specific wavelengths and give the lather a distinct colour. However, some very strong dyes can produce coloured lather, but you won't usually find them used in cosmetics.

Answer 2

Lava has the power of real lava when it cleans.  I think they want it to always be while so men think that Lava is tough.  it can't be tough and be lavender or blue.

Answer 3

Great question - have a star, sorry I don't know the answer - but will be looking at your answers as I want to know too.

Answer 4

Lava is always fiery red.

Answer 5

color attracts the eye, and a color like red is very distinct. Lava is white because it looks clean.

Answer 6

I think its to do with the oxidative reaction that occurs when sulphites in the shampoo react with the air