Ailz and I do product trials. It doesn't pay anything, but it's an interest- and sometimes the soaps and shampoos and dermal scrubs we get sent are worth having for their own sake. I'm currently testing a tarry gloop that's part shampoo, part hair dye. It smells of melons and is supposed to make my brown eyes blue my grey hair brown. I'm over halfway through the two week course and I can't see it's having any effect.
Come the weekend I'm going to get the clippers out and give myself a Number 4 for summer.