Regardless of the colour of soap, shampoo etc why are suds always white?

The coloring in soap will color the suds very slightly, but there's not nearly enough coloring to color the suds very much. Remember, the volume of suds is much higher than the volume of the soap from which they were made.





If a soap had way too much coloring in it, it would color the suds more. It would also color whatever the soap was washing, which is why the manufacturers don't use that much dye!Regardless of the colour of soap, shampoo etc why are suds always white?
No, if you are really dirty they go brown and leave dirty marks all over the bathRegardless of the colour of soap, shampoo etc why are suds always white?
lmao
great question!!!
they aren't. I have blue soap and it gives of a blue tint.





The colouring in soap get dispersed in air and water so as a result the colour is less noticable.





Bubbles give of a rainbow because it's skin is not uniform in thickness and changes. This means light is refracted differently off the bubbles. I think it is called thin film interferance
it has something to do with a chemical reaction.
but the bubbles have rainbows - that count? hmm, why do bubbles have rainbows?
never thought about it
Because the actual soap content is still white, the colour is superficial and dissipates before it can have any real effect on the suds.