What it is: Matrix Biolage Volumebloom Shampoo, Conditioner and Volumizer Spray, $16-$18What it does: Adds long-lasting volume to limp, lifeless hair.How it works: Taking inspiration from nature, this volumizing line mimics the natural power of the cotton flower, which has internal elastic fibers that twist into formations inside the plant. These twisty sculptures hold the plant’s shape and prevent it from falling flat, creating that weightless-yes-sturdy structure.This line’s shampoo and conditioner add a bit of volume and shine, but the real superpower product is the Full-Lift Volumizer Spray, which bolsters the hair with flexible polymers to multiply the number of fibers and create a fuller structure. To achieve sky-high volume, simply spritz the volumizer on your roots before blow-drying. Dry using a roundbrush to lift hair and set volume in place. The long-lasting effects will give you up to 70 percent more volume, without any stiffness—in fact, hair’s left with the same bouncy, flexible fullness as a cotton ball.Why you care: Not only is voluminous hair sexy, it also signifies health and youth. This will give you that extra oomph with a totally natural look and feel.