The future of consumption PHD is a liquid emulsifier that breaks down Shatter or concentrates into a stable E-Liquid. From there the possibilities are endless. Use it In your SubOhm Vape gear, Dab rigs, Bubblers, and Bongs using Trough bangers or 6 in 1 attachments, 510 attachments, Wax & Concentrate Kits. PHD Can be used in making edibles like gummies or cookies. It can also be used to make aromatherapy products mixed with VG.