SDD Body Wave Hair refers to a specific type of human hair used for wigs, hair extensions, and weaves that is sourced from a single donor (SDD) and has a natural body wave texture. The body wave texture is one of the most popular and versatile hair textures, loved for its soft, flowing waves that add volume, movement, and a natural, relaxed look. Here's a detailed breakdown of what SDD body wave hair is, its characteristics, why it's so sought after, and how to care for it.