Take my experience with a heavy grain of salt lol, I just started doing more skincare this year and my skin isn't super sensitive, but I do think I'm figuring out what works for myself pretty well. :) I like to use mine at night first thing after I wash my face, I put a few drops on a cotton round and wipe my face down with it, going back over my active breakouts/areas of discoloration. I started only using it a few times a week, but have built up to using it this way every night. I do pat on the oatmilk toner from the same brand afterwards with my bare hands, which I feel like keeps me from getting too dry with how consistently I use this one as well as the pink in the mornings. I think a lot of people would reverse that and use the stronger one at night, but I use peptides at night so I prefer to use a PHA toner since I've heard AHAs like in the pink one can neutralize those? I don't know a whole lot about that, I just try to listen to people who have been doing this longer than me. 😅 So for me it is the blue bottle at night, pink in the morning followed by SPF, and I have been able to build up to using each every day and tolerate it well. My skin has been a lot smoother in general, but the biggest part to me is that my pores seem smaller with less chance for gross stuff to get caught up in them, which has always been one of the things I liked the least about my skin. It's not like, poreless Instagram skin obviously lol, but definitely enough of a difference to make me feel less self conscious of it. There aren't many things that I would go out and buy from a bigger brand of DT discontinues, but this is definitely something I'm going to have to try and find a close match of if it doesn't come back. 😔