Different Types of Hair Bundles: Understanding SD, DD, and SDD
When shopping for hair extensions, it is important to know the different types of hair bundles available. Here we explain the differences between Single Drawn (SD), Double Drawn (DD), and Super Double Drawn (SDD) hair bundles.
Single Drawn (SD) Bundles
Single Drawn hair means the extensions contain multiple lengths of hair mixed into the extensions, resulting in hair that is thickest at the top, tapers at the middle and is thinner on the ends. SD bundles consist of 50% longest length hair and 50% shorter length hair. For example, a 20″ bundle will have 50% 20″ hair, 25% 18″-16″ hair, and 25% 16″-14″ hair. This results in a thinner bundle.
Double Drawn (DD) Bundles
Double drawn hair contains a bigger percentage of single hairs that are all the same length making the piece of hair thicker and fuller from top to bottom. DD bundles consist of 70% longest length hair and 30% shorter length hair. For example, a 20″ bundle will have 70% 20″ hair, 20% 18″-16″ hair, and 10% 16″-14″ hair. This results in a medium-full bundle.
Super Double Drawn (SDD) Bundles
SDD bundles consist of 90% longest length hair and 10% shorter length hair. For example, a 20″ bundle will have 90% 20″ hair, 5% 18″ hair, and 5% 16″ hair. This results in a very full bundle.