Gilding Brush, Gold Duster Brush by Slofoodgroup Round Oval (Size 2)

To those saying brush shedded hairs, was it because bristles came into contact with the sticky adhesive used to hold gold leaf and were pulled out?

Can this brush be used for acrylic paints?

Is this bush used to Apply glue?

Have tried to clean brush with soap & water & brush remains sticky Any suggestions?