The washing of hair

Here's something told me by a community worker recently. She went with some local women from a low-income neighbourhood on a residential trip, where some of them encountered shampoo for the first time and didn't know what it was, or what to do with it. They always use washing-up liquid.

I've never before considered shampoo in terms of cultural capital, although I've reflected often enough on the role of hairdressers in social capital. It did strike me that there may be many 'heavy-users' of shampoo who don't know what washing up liquid is.