There is an enclosed brush located beneath the blush, which I haven't even tried. I don't use brushes that come with products, as they are usually pretty crappy. Because the color is rather subtle, I used a cheek contouring brush, as the flat but dense brush head did a good job of picking of color and buffing it out.
Warm provided a nice wash of color with a subtle shimmer that did brighten my face. In fact, it may make a good bronzer for me, as it's not muddy but does provide a nice sun-kissed glow kind of effect. I found it hard to overdo this blush, as most of the color palette is neutral with just a few dashes of coral and muted pink. These blushes are violet scented, but I've got to say I've yet to notice the smell and I keep forgetting to sniff it to see, so it must be very muted.