I'd love to DIY masks but honestly I don't have to time to track down ingredients, mix them together, etc. I just buy stuff off the shelf because it's easier, plus I don't use anything expensive anyway; I think the most pricey mask I've ever bought myself was like $12.
I'm actually sensitive-combination. I very rarely get spots anymore, but that's good to know about, since the ones I get tend to be tiny but stubborn.
Speaking of, Korean beauty fans,
Skin Food has a US-based online store now! Most of the products are around the same price you can get them on Amazon for, too, with the added bonus of not having to wait a month for your product. Only thing is, they don't have the full line; the BB creams aren't available, nor are some of the makeup products. But still, it's worth checking out.