Naked Science Forum

Non Life Sciences => Chemistry => Topic started by: paul.fr on 04/09/2007 16:37:14

Title: Purple coloured shampoo does not turn hair purple, why?
Post by: paul.fr on 04/09/2007 16:37:14

Anastasia has a shampoo that is purple in colour, why does this not turn her hair purple when she applies it?

Title: Purple coloured shampoo does not turn hair purple, why?
Post by: Mr Andrew on 04/09/2007 17:26:55

Easy, the dye does not adhere to her hair.  It'd be like using watercolors to shampoo...they'd just wash off in the shower (unless of course you shower with something like CCl4 or benzene).  The dye in the shampoo is water soluble.  The only reason that shampoo is purple is for marketing purposes.

Title: Purple coloured shampoo does not turn hair purple, why?
Post by: neilep on 04/09/2007 18:24:50

To test Andrews post above why not buy some purple ink and mix it with the shampoo next time for purple shampoo joy and luff !!..........which I am sure will be appreciated with smiles and glee !!

Title: Purple coloured shampoo does not turn hair purple, why?
Post by: lightarrow on 06/09/2007 15:41:04

Quote from: neilep on 04/09/2007 18:24:50

To test Andrews post above why not buy some purple ink and mix it with the shampoo next time for purple shampoo joy and luff !!..........which I am sure will be appreciated with smiles and glee !!

Or, even better, why don't we buy some purple ink and mix it with the shampoo and then take it back to the shop saying we actually wanted another kind? [8D]

Title: Purple coloured shampoo does not turn hair purple, why?
Post by: paul.fr on 06/09/2007 21:32:03

I wonder if i could get arrested for that? Do they have broadband in prison?