No, just my natural nails. I've never really had very strong nails till I went on this low carb diet! My nails toughened up, go figure!!
I didn't know what MMA's were...but the shop in Walmart doesn't use them...they have a placard on the wall stating as such. Don't know about the little shop down the street, but I guess it doesn't matter since I don't get fake nails.
I wouldn't go to a place that uses MMAs even though I, like you, don't care for fake nails. It's just a quality thing. Like I don't go to the Chinese place that got caught serving cat, even for, say, shrimp fried rice where you can identify everything in it.