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Inside InStyle‘s new May issue are 151 incredible hair, makeup, and skin products featured on our expertly-researched 2011 Best Beauty Buys list. The lineup is so lustworthy, that we’re giving tons of the items away today through Thursday, April 28th! Find out how to win today’s giveaway below!

Today’s giveaway category: HAIR!
Today’s prize includes 13 hair Best Beauty Buys—including L’Oreal Paris Elnett Hairspray, Moroccanoil Intense Curl Cream, and Bumble&bumble Styling Creme—with a value of over $225! Simply follow InStyle on Twitter (@instyle) be the tenth person to retweet a special message (we’ll tell you which one!). Then, check back all week for more chances to win. U.S. and Canada residents only. Click through the gallery to see a few of the products you could nab today!