Real Techniques Instapop Eye Brush Duo is a brush kit with two complementary makeup tools. Featuring synthetic bristles, these brushes are extremely soft and suitable both for cream and powder formulas. You can use the brushes to create from natural to dramatic eye looks - the result depends on the eyeshadow colors and finishes! Start every eye look by applying a base shade using the 305 Instapop Shade Brush, and intensify the look using the 306 Instapop Crease Brush to add a deeper color.