Hairdressers, chemists and supermarkets offer an ever-growing and costly choice of ways to wash your hair, but there's a much cheaper solution lurking beneath your kitchen sink.
Picture by ktpupp
In her book Hard Work—a fascinating account of trying to survive on the minimum wage—journalist Polly Toynbee deploys several cost-cutting measures, including this one:
I know a trick with shampoo from an article I wrote about detergents years ago: there is virtually no difference in the chemicals used in washing-up liquid and in shampoo, so I used a little diluted washing up liquid.
No doubt our cosmetics-loving readers are cringing, but the logic is already evident in the all-in-one shower gel/shampoo combos you can find everywhere these days. For another unexpected detergent deployment, try using it to unclog a toilet.