I saw
this pin about re-newing old paintbrushes by soaking them in vinegar. So I decided to give it a try.
Here's my paint brush before the soaking.
It's not in terrible shape, but I wondered if the soaking would release the old paint.
So I boiled up some vinegar. I would have rather put the paint brush flat, but to cover the whole thing I would have needed to put it in my 9 x 13 pan. I didn't want to use up a huge amount of vinegar, so I stuck it upright in my quart measuring cup.
I let it soak for about 6 hours. Then I washed it really well in soapy water. Here's what it looked like after.
I do think it turned out nice, but not as nice as I had hoped. The oldest paint is still there. You can't tell from the photo, but the bristles were softer. What I don't like is that because I didn't want to use up a gallon of vinegar, the bristles are now a little distorted! I hope they return to normal when we paint again!
But the question is, "Was it worth it?" No. I may do this for little paint brushes, when just a small amount of vinegar is used. But I don't think it affected how the paint brush will work, unless it is adversely affected by the warped bristles! Plus, my house was stinky for 6 hours! (It was cold, and I didn't want to put the experiment outside.)