This is a common term used amongst cannabis and CBD consumers. A concentrate describes a substance where by the diluting agent is either reduced or removed altogether to produce a higher purity product (80-99%).
A CBD oil is usually diluted with hemp seed or MCT oil, this is referred to as a carrier oil. A concentrate will not have any of these additional ingredients. Examples include CBD crystal isolate, wax, shatter, crumble or live resin. These are normally consumed as dabs (a method of vaporisation) which are inhaled for fast acting effects.