How To Revive A Worn Out Toothbrush
When all the bristles on their toothbrush are bent, most people would call it quits and just buy another. But you're not most people, and you don't admit defeat that easily. When you dip the head of the toothbrush into a bowl of boiling water, the plastic bristles will return to their original shape and you can go on using your grebby old toothbrush.