The Boy Brow like most Glossier products is great for sensitive skin. I didn't have tiny breakouts like some brow gels tend to give and claims to be for all skin types. It is also hypoallergenic, ophthalmologist tested, dermatologist tested so I think it's pretty good to go for all skin types.
If you're oily, you should definitely give this product a go. I used it most of this past hot and humid summer when my skin is more on the oily side and it would last a full work day and then some.
This tiny tube retails for $16 on the Glossier website. Although tiny, a little goes a VERY long way and would last you quite some time. It comes in 3 very sheer, workable shades (Blonde, Brown and Black). Grab this gem while you can because they are in high demand and frequently sell out, especially Brown and Black). The bigger the brow the badder you are. Own your fluffiness. Thank me later and go make Cara Delevingne proud.