A rosin press compresses dry marijuana into solventless extract.
Furthermore, a solventless extract does not contain solvents or chemicals. A rosin press creates a solvent-less cannabis extract, or wax, when heated.

A rosin press compresses dry marijuana into solventless extract.
Furthermore, a solventless extract does not contain solvents or chemicals. A rosin press creates a solvent-less cannabis extract, or wax, when heated.