MAC's Impeccable Brow Pencil is absolutely amazing. I completely went through this pencil until it was completely gone. The formula is waxy enough to keep your hairs in place while having enough pigmentation for it to fill in those areas of brow that don't quite grow out. What I love about this pencil is that it's not too waxy that your brows are completely greasy and oily by the end of the day (which tends to happen to me since I have combination/oily skin).
MAC 'Dirty Blonde' impeccable brow pencil has been the only brow pencil I have found that has suited my colouring -as I have auburn hair, it can be hard to find products that suit. I absolutely love using MAC impeccable brow pencil and have used it for the past 3 years now.
Super easy for a natural, defined brow
I'm very pleased with this product! I've used both eyeshadows and MAC Eye Brows to fill in my brows before, and this is definitely the easiest product to use. It's not super pigmented (like the Eye Brows) so you don't have to worry about your brows looking too drawn on. It's not as precise as the Eye Brows though, so if you like those super defined brows, I probably wouldn't get this. This gives a pretty even color without having to brush your brows through afterwards, so it's great for traveling since you don't need to bring a brush for it, which you'd need to do with an eyeshadow.
Now, if only they'd come out with a red one so I'd be able to match it to my current hair! :D