Welcome , but it's not heated water . E-liquid is made of either PG (propylene glycol ) or VG ( vegetable glycerin ) or a combo , of both of these . And then flavor and any % of nicotine added . I don't recommend trying to stop smoking , without getting at least a little nicotine . I started with 24 mg . nic juice , then lowered to 12 mg , then 6 , and finally to 0 . But that took alittle over a year , to do . Depending on how much you smoke , will tell you what strength juice to start with . I was smoking two packs a day , and 24 mg. was plenty for me . Quickly lowered to 12 mg , where I stayed for awhile , then lowered to 6 , and as I only vape DIY juices these days . I had made some juice , and forgot to add the 6 % nic. juice , when the bottle was almost gone , I realized , I forgot to add the nic. But I didn't even notice , so from then , on , I no longer use nicotine . I still enjoy the habit , and the hand to mouth thing . Really like the huge plumes of vapor . So , good luck . Your way ahead of the game for wanting to stop at an early age . It's alot harder , after smoking for 40 years .