Real Techniques Duo Fibre Collection Brush Set is a duo-fibre bristles set that are designed to pick up and release light amounts of makeup. Face brush is for a lightweight application & blending of face powder or pigments Eye brush adds finishing touches to the eyes Contour brush is for controlled contouring + sculpting.Duo-fiber face brush: for lightweight application + blending of face powder or pigmentsDuo-fiber eye brush: add finishing touches to the eyesDuo-fiber contour brush: for controlled contouring + sculpting