Paul Mitchell's Round Trip Curl Definer is the best volumizing product for curls. This curl definer is specially formulated to enhance curls and increase the volume in hair. This product provides weightless bounce to curls without weighing down hair. This curl definer also smooth's over curls leaving them sleek and defined. Paul Mitchell Beauty Products are designed with expert hair care in mind, without spending the expert price. Paul Mitchells' innovative hair styling products are designed without the use of animal testing. Paul Mitchell Thrives on experimenting, researching and testing their products on humans before delivering its' customers the expert hair care products designed with you in mind.