I saw that about the Sulwhasoo reformation, I'm gutted as it is so lovely to use. It honestly brightens my morning when I use it. 
I have one left which I've self ph tested and it's the low ph version. I'm really happy with my Cosrx but the Sulwhasoo was special, not just nice.
I'm starting my routine early today as DH is out and DD is fast asleep in bed recovering from a school trip. I'm on step 4 which is my BHA, it'll end about 11 when I'm slapping Rosehip oil and Holika Holika red wine jelly on my face. 
I'm just so damn happy with AB'ing, my skin has improved so much. It was never terrible, bit of hormonal acne, redness, minor aging etc.
Just now it's silky smooth, plump in a not "eaten all the pies" plump. Fine lines are reduced, or gone. Redness has calmed right down and I have a nice healthy glow.
Thanks for everyone on this and past threads, it's been a game changer for me.