The wrong blush shade and texture can take you into lady-of-the-night territory. The right blush, however, can give you a lit-from-within flush, brightening your complexion in about 10 seconds flat. Such is the case with Giorgio Armani's Sheer Blush (£31). As the name implies, this blush imparts the subtlest amount of colour to the skin. And because of its soft, lightweight texture, there's nary an obvious streak or too-shimmery finish to be found. In fact, likely nobody will know you're even wearing makeup. It's a high-end purchase, no doubt. But for its ability to give you a fresh-faced, natural-looking glow with minimal effort, it's hard to put a price on that.