Rosin is one of the only true solventless extracts available. Most extracts utilize a number of solvents in the extraction process, but not Rosin. By using both heat and pressure and applying them to cannabis, the result is a beautiful glob of pure Rosin. Many “purists” are drawn to the natural extraction process of rosin. PVRE full spectrum Rosin is made without the use of chemical solvents providing consumers with a superior clean experience.