This increase demand of E-cig from California is mainly due to the high efficient working of this electronic gadget. It is very simple to use and is totally tobacco free which makes it healthier than the regular cigarettes. You have a choice of choosing the amount of nicotine you want. It can vary from very few to as much as you want. It has an LED fixed on its front which lights when you smoke. Instead of that tobacco smoke, the smoke e-cig gives out is just water vapors. They are not dangerous at all for your health by any means.