Pure Capsaicin: (16 Million Scoville Units) What we have here isn’t a sauce, or a food really, but tiny crystals composed of pure, uncut capsaicin. At its most powerful, the chemical packs a walloping 16 million Scoville units. Just to give you an idea of its power, the crystals come sealed in a vial, which is then sealed in a waterproof carrying case. On the side? A pair of gloves, a face mask, and forceps. To activate it, dilute it with some alcohol and heat it up.