I finally fell down the K18 rabbit hole — yes, I’m fashionably late. After more than five years of professionally testing beauty products, I’ve developed a pretty sharp instinct for hype, but K18 has been impossible to ignore. Still, I held off. Part of it was skepticism, and part of it was knowing that if I was going to do this, I needed to go all in and review the product line. A quick wash-and-go wasn’t going to cut it; I wanted the full experience, the kind where I swap out my usual lineup