Which hair cutting technique involves using a razor for a softer finish?

The technique that involves using a razor for a softer finish is slide cutting. This method allows for a smooth transition and a more blended appearance in the hair, which is ideal for creating softer lines and textures. When a razor is employed, it can remove bulk and add texture while maintaining length, making it particularly useful for styles that require a gentle, feathered effect.

Slide cutting differs from other techniques in that it is specifically designed to manage the hair's movement and texture without creating harsh lines. In contrast, blunt cutting provides a defined edge, layer cutting focuses on graduated lengths for volume and shape, and texturizing involves removing weight and bulk without necessarily affecting the overall length dramatically. These other methods serve different purposes and achieve distinct results, highlighting the unique role that slide cutting plays in hair styling for a soft finish.