Leave it on for 15 mins or longer and your skill will feel softer, smoother, and alot tighter. My sister who has alot of acne/blackheads said it definitely pulled out the impurities from her nose area. I would say do this once a week.
Smell bothers you for a few seconds but once it dries, you are in awe of how shiny and beautiful your nails look! Definitely helps cheap nail polish last about a week or more depending how much you work your hands lol.
Why buy any other one? This thing last for years! I've had mine since HS.. which was about 6 years ago or so. (I'm old now...) Still sharp after all this time! I'll probably end up using it for another 6 or so more years! :)
If you like to have a thin angle brush for lining your eyes, this is NOT a product I would recommend. For me, this is a brush I grab everyday to put on some thick eyeliner and go.
Got this as a tiny sample at first and it lasted a good 3-4 months. Just dab a finger lightly into it.. Very little product goes a long way! Thought it worked well so I bought a full jar!