revive old paintbrushes by soaking in not white vinegar for 30 minutes then wash off with soap and water
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10 Household Uses for White Vinegar
#3. Use vinegar and hot water to clean your paintbrushes. I wasted a lot of money on paintbrushes before I figured this out. Here's what I do. For brushes that are just kinda dirty, I fill a small bowl with 1/2 vinegar, 1/2 hot tap water and soak for about 30 minutes...