Cosrx Two in One Poreless Power Liquid

Been using this for a 2 months. I've been treating it as a treatment and using it right after a toner or my bha power liquid. Usage 1. Dear Klair's Supple Preparation Facial Toner + Cosrx Two in One Poreless Power Liquid 2. Dear Klair's Supple Preparation Facial Toner + Cosrx BHA Blackhead Power Liquid + Cosrx Two in One Poreless Power Liquid Been using it with the either of the two options above. But upon browsing here it's considered as a toner. How should I actually be using it? Can I use this everyday in the evening? Or should this be treated as a exfoliator same as the Cosrx BHA blackhead power liquid? Thanks!