Another way to remove blemishes is to eye drop the closest good skin tone to the blemish - pick a fuzzy paintbrush not much bigger than the blemish - select Mode Color (about 80%) - then color the blemish. Then select Mode Lighten (about 20%) and dot the blemish away.
Yes, it's a bit more tedious but you have more control over the end result. (IMHO)
