I also use the Missha occasionally. I don't think I'll get through the tube before it expires. I find it a bit too heavy for everyday wear. On some people, it oxidizes a bit greyish. If I want something truly light but with a bit of sunscreen, I use Maybelline BB cream. It's more of a tinted moisturizer. I'm just finding that as I get older, my skin gets drier even though I do moisturize before applying makeup. So foundation is getting tricky for me. It shows up easier than it used to, and tends to look unnatural. YMMV.