I hate having to sharpen eyeliner pencil. It's a pain in the you know where. So I've had my eyes on these for a while. At the end of lash year, where I live they did a clear out of all their Smashbox products and I happily trotted away with one of these at a more affordable price.
That is definitely the biggest drawback of this product - price.
In terms of the positives. In case you couldn't tell, it self sharpens when you put the lid on. It also glides across in a smooth well pigmented line and stays in place all day.
I really like the eyeliner. It's pretty much perfect (and I love Smashbox in general). But with products I use up so quickly, it would be very hard to justify buying another eyeliner full priced.
I've bought two of these Smashbox pencils that have the built in sharpening mechanisms - a lip pencil and an eyeliner.
So issue I have with the mechanism is you can't really get the tip of the product that sharp. And also they don't seem to last very long...and that's because I've been over twisting them to get them sharp.
My biggest issue with the eyeliner is that I have to apply it quite hard to get the colour to apply and I have to go over it several times. And given it's my eyelid over my eyeball that's not the greatest of feelings.
With primer however it does stay on well and the colours are also really good.