Do you trim your paint brushes?
Yes, I do occasionally trim my used paint brushes. You can watch me demonstrating how I do this in my ‘How to Paint Conifers’ Oil Painting Tutorial on YouTube. Here, you’ll see me sharpening a used flat brush to re-establish the squared off edge for better foliage “v” strokes. I use an exacto knife but any other very sharpe edge like a razor blade could work as well.