I bought a load of cheep brushes recently to use for Dry brushing. I wanted to hold off until I could get to a good art shop and buy a quality brush but I couldn't put it off any longer. What I wanted was a couple of small square headed brushes specifically for dry brushing small areas. The last time I bought a brush like this is cost me ten quid (GBP £10.00). These were a LOT cheaper (four for £4) but I figured that they were going to get some rough treatment so why waste money on expensive brushes.
I bought two types, one in white Nylon and another in coloured nylon. The white brushes have angled heads so I can use them to get into awkward spots like underarms and inside cloaks. I finally got to use them yesterday and I have to say I was pleasantly surprised. The nylon 'hairs' were flexible and didn't loose their elasticity once wet. At the same time they were still stiff enough to rub across texture and do a good job as dry brushes. Of course I will try and get some quality brushes at a later stage but I think that for a reasonable £6 investment I have picked up some useful tools.