Mix #14 Grape Guava Swirl [Strawberry Guava x Dulce] Proper Cannabis Rosin is Hash Rosin, meaning it begins as ice water hash, which is a collection of trichome heads that are suspended in water and then filtered through a series of screens. The filtered material is then freeze dried and refined using only heat and pressure—no solvents. The final product has a badder-like consistency and the same full-spectrum of cannabinoids and terpenes as our other extracts.