Fluidline from Shop/Cook MAC collection. It was on the website last I checked and had not sold out after the last restock. If it is OOS, it may be available at Macy's or Nordies still?
HTH I think I like Fluidlines slightly better than Pearlglides, but the second is easier to apply. The FL however last forever.
I was able to get Midnight Snack and Wholesome fluidlines from a Macy's counter about 2 weeks ago. I think you have a shot at still buying them. I also didn't realize Midnight Snack is a periwinkle-ish color since I haven't swatched it yet. That's good to know! It just looks gray in the pot.