Clean hairbrush
After some use, many people neglect to clean their hairbrushes due to the amount of hair stuck in them. It is sad to see so many good brushes thrown in the trash because some wild hair won against their cleaners. With this hack, you don’t have to buy a new one again.
A quick solution for this will require, besides your trusty WD-40, a comb. Spray the brush and wait for a few seconds. Pass the comb through the strands, see how everything sticks to it, and free the hairbrush from any tangled hair. Now there is no need to throw it away.