I got it 4 years ago, and I checked the ultrasound and it still hasn't dissolved, so the skin surface is bumpy.
Even if it melts based on the ultrasound, it won't melt if you don't target it exactly.
In my case, I had to target at least 10 places with a needle..
Tear troughs and nasolabial folds. It piles up next to the wrinkles, making it look like there are two wrinkles under certain lighting.
And if anyone knows what kind of laser to use for wrinkles like that, please let me know.