Top Pick Amazon Katom Comfort Durability Performance This brush had the thickest head of bristles in the testing, allowing it to pick up and deposit the greatest volume of egg wash, oil, butter, or glaze in a single pass. And because the bristles weren’t too densely packed, they still felt agile and precise. At a uniform 1.8 inches, they were the ideal length for most tasks (though some testers preferred brushes with slightly longer bristles for getting into the nooks and crannies on fruit tarts).