Which technique is used to create texture in hair?

The technique that is primarily used to create texture in hair is thinning. Thinning involves using specialized scissors or tools to remove bulk from the hair, allowing for more movement and the creation of layers and texture. This method can help to soften the lines of a haircut and enhance the overall appearance of the style by giving it dimension and body.

While other options like blow-drying, flat-ironing, and curling can influence the overall look of the hair, they do not specifically create texture. Blow-drying can add volume and help to set a style, flat-ironing produces a sleek finish, and curling primarily adds wave or curl but does not inherently modify the bulk or texture of the hair in the way thinning does. Thus, thinning stands out as the technique focused on enhancing texture.