First of all: I don't use them every day as I already have some  PHA products in my routine - only once or twice a weak, when I feel my skin has been sweaty or when I'm feeling like getting some pimples. I feel it prevents from getting them most of the time or if I get them - they are away in maximum of two days.

I think this would not hurt to use everyday as it is gentle and effective, provided you are not using any other acid products already.

There's some slight tea tree smell at first, but it feels fresh and fades in minutes.