Learn which wavy hairstyle works best with your face shape and Style It Yourself. A deep side part with long, tousled waves looks best on heart-shaped faces. A center part with waves that have lots of volume works best with an oval-shaped face. To soften a square-shaped face go for a shaggy haircut with textured waves. Create more definition in a round face with loose waves and asymmetrical layers. Use Suave Professionals Sea Mineral Infusion products for effortless volume in any style.