If dullness/lack of radiance is your concern, you need to step up exfoliation. A facial scrub a couple of times a week, and then a beta hydroxy acid product to speed up that exfoliation. I use Clinique's Even Better serum for dark spots. If not concerned with dark spots, try their Turnaround Concentrate. It also speeds up exfoliation and you will feel a difference in your skin(think softer, smoother feeling) the very next day. Takes about a week to see the radiance begin to return. Of course, moisturize and daily sunscreen. The more you step up exfoliation, the more you need to moisturize. The sun and the free radicals in the air do a number on the skin, making you age faster. Protect it w/ daily sunscreen. I also have their 5 minute Instant Facial, which is like a mini-microdermabrasion treatment at home. I only do this one once every two weeks or so, but man, my skin feels really smooth after I use it.
I am aware of all those cleansing brushes out now, I feel they are just a trend. But people I know that use them, love them. I worry they spread bacteria around, but know they have an answer for that. They are very expensive and I am not convinced they are worth the money.