Be careful with use and side effects
So I bought the melatonin sleep diffuser, it was buy one get one free and came with a free eye mask which had was nice. Its good, easy to use with a nice smell and it certainly did have a calming effect so improved my sleep to some extent because my body/mind relaxed quicker than usual so I sort of had high hopes for it being a long term use for me. However, before you buy it, research the side effects of melatonin and be careful how much you're using it if you do decide to buy it. After using it (too much, in hindsight) I was getting dizzy spells during the day time and waves of nausea which at one point lead me to being physically sick. It only occurred to me that it was the melatonin in the diffuser causing it after I stopped using it for a few days and felt fine, and then immediately started getting dizzy spells again when I started using it again so I have stopped now and feel better. Its not a bad product, just be careful using it and research the side effects of melatonin first.