Air Purifiers

I am thinking of getting this humidifier/air purifier/ioniser for my bedroom as my biggest concern is dust and itchy skin/throat due to dryness.

But was wondering, since i live in a humid country, Singapore, is it alright to be using a humidifier? will it cause too much ‘wetness’ increasing the growth of mildew, fungi and bacteria in the bedroom?

and what do u think of this product if you have used it.

thanks