Style Link Volume Builder is a lightweight volumizing mousse from Matrix's StyleLink Prep collection, made to add fullness to damp hair before blow-drying without leaving behind stiffness, tackiness, or a crunchy cast. The airy foam works through clean, damp hair to build body at the root and smooth the lengths, which also makes it a useful leave-in for wavy or curly hair that needs frizz control and hold before a ponytail or braid. It's meant to go on before drying and styling rather than as a finishing product.