The term 'Do a Do' is a hairstyling technique that involves using a perm, styling, and teasing to create a voluminous look. The perm solution is a chemical treatment that helps to create curls or waves in the hair. Styling involves using products such as mousse, gel, or hairspray to shape the hair into a desired STYLE. Teasing involves backcombing the hair to create volume and texture. This technique is often used to create an updo or other formal hairstyle.