Impressive L'Oreal Faux Brow Brow Pen Review I talk about the impressive L'Oreal Faux Brow brow pen. It's a waterproof pen that delivers thin, hair-like strokes and is super easy to use. The fine tip makes the application smoother, and it can be used on sparse areas around the hairline. browpen L'OrealFauxBrow waterproof hairlikestrokes easybrowapplication finepentip sparsehairline lorealparis LTKSwim LTKFindsUnder100 LTKBeauty