In the case of the Shiseido Perfect Foundation Brush ($30), "perfect" is not an adjective. It's a fact. It might be the only foundation applicator you need, because unlike most flat brushes, its slightly angled bristles reach all the contours of your face without the telltale streaks. Don't limit this brush to liquid foundation, though. As one who likes to switch up her foundations throughout the year (altering between liquid, powder, and tinted moisturizer), I can honestly say this brush offers a uniform application with all types of products — concealer included. It's also rather small in size, so it can fit into the most compact of makeup bags. It's a splurge at $30, but worth it for the mere fact that it can make any complexion product work as if it cost a million bucks.