In the description it's mentioned as a tight line brush, honestly I think it would be horrible to do a tight line, the bristles are uneven and it might hurt the delicate area, Use the Sephora Pro Tight line brush, or Laura Mercier has a good one as well. This brush is amazing for applying mascara though, I'm obsessed with it, I never use mascara wands now, ever!
answered 4 months, 3 weeks ago
I did an online search and found this information on how to use a brush like this to apply mascara.
I would look for a tutorial on the Sephora website, YouTube or stop by a Sephora store for some hands on assistance.
I personally think it is just a poor brush. Maybe idea is interesting but not thought through. It didn't work for me either.