The solvent extracts the trichomes and all the components, lipids/waxes are then removed through filters as they coagulate at such cold temperatures. The extracted solution is then poured out into thin "slabs" and purged for up to 3-4 days in a vacuum oven to ensure all the butane/propane is removed as they boil at lower temperatures than terpenes and cannabinoids. What is left is a beautiful sheet of malleable oil that resembles a glass and can shatter if manipulated enough.