Since my skin is drier during winter, I have been using a liquid foundation. I know the older blush brush is rather small for overall face, but do you think it would do okay with putting on liquid foundation? And does anyone have a really good technique to doing this? I really want to try it!

Fiberoptic brushes can be great for applying creams and liquids - I think it's worth playing around with your blush brush just for kicks. When I've done this, I've put the liquid foundation onthe back of my hand, then swirled the brush into it, dabbed it on the places I wanted the most coverage (center of face for me), then just started buffing it in in swirly circles. It does give a nice finish, and I think I ended up using less foundation than I would have with a sponge. Def. worth a try!

I have tried it before with that brush, and it works for me! I just dab it over and over (stippling, if you're familiar with the drawing technique). I do it went I want serious coverage, then sometimes a light layer of minerals over that.