You can apply it thinly and carefully without streaking. The dense brush emphasizes adhesion and is poreless with its quick, swirl action, making it ideal for nights out or formal wear. The thinned brush gives a fluffy, airy finish, so it's perfect for everyday makeup. And this flat, paintbrush-like brush gives you a thin, beautiful veil-like finish, so it's great for when you want a smooth finish regardless of the occasion. These are my personal tips for using them and the results I feel. Makeup is fun.