All you do to re-hydrate dryed out weed is put a medium size piece of lettuce in your hand, crumble it up once and then put into the bag with the weed overnight and take out in the morning. You can gain about almost an 1/8 overnight by rehydrating a dryed out 1/2 ounce, burns better, tastes better and isnt as harsh. I do it all the time if I by some overdried weed, rehydrate and gain grams on it to. Peace....MrP.