What is the action that creates mass or fullness with sections of hair raised from the scalp?

The action that creates mass or fullness with sections of hair raised from the scalp is accurately described by the stand-up pin curl technique. This method involves lifting the hair from the scalp and securing it with a pin, which allows the hair to maintain elevated volume and shape as it dries or sets. Stand-up pin curls are particularly effective for creating body and texture in hairstyles, as they encourage the hair to radiate out from the roots, enhancing fullness.

This technique contrasts with other methods listed. For instance, thermal pressing primarily focuses on straightening the hair shaft and does not inherently create volume or fullness. Dreadlocks involve a different style and technique that effectively locks hair into matted forms over time, which doesn't relate to raising sections of hair for fullness. Cascade curls, while sometimes involved in adding body, refer more specifically to a method of curling hair down rather than the specific action of lifting hair from the scalp to create volume. The stand-up pin curl remains the ideal method for achieving the described effect of mass and fullness.