Solution #2: If your herbs combust and turn to ash, you may have a combustion vape. While most dry herb vaporizers use convection, there are dry herb combustion vape pens out there. Instead of a ‘true vaporizer’, combustion vapes burn your herbs at a higher temperature, similar to smoking them. If you have an AGO G5 combustion vape, you can use glass screens to lower the temperature and get more vapor. Otherwise, you may want to look into buying a convection dry herb vaporizer.