If you have thin eyebrows, SmartBrow Eyebrow Filler, $61, promises to give you 24-hour enhancement. Whether you're growing out your brows or they're permanently sparse, the thought of all-day color may be pretty appealing. Continue reading to find out if this brow product from SmartFX will do the trick for you.

What You Get
SmartBrow comes with a dual-ended applicator. There's a thin-tipped brush that you use for applying the makeup and a spoolie side for blending the color naturally.

Of course, the star of the show is the color itself. The polymer-rich formula is designed to bind to the brow hair that you do have to give it fullness and definition. It comes in four shades: Taupe, Blonde, Brunette and Black/Brown.



Because the tinting power is made to last all day, plain water won't remove it. Therefore, your purchase includes SmartBrow Eyebrow Cleanser for easy removal.

How to Use
Start with clean, dry skin. This means no makeup, so don't apply a layer of foundation before applying the brow booster.

Next, use the thin brush side of the applicator to gently trace your brow line following your natural shape. Also, fill in color where needed, always using short hair-like strokes. If you have patchy brows or no brows at all, put the makeup right on the skin.

After applying the color, switch to the spoolie to brush your brows up and out. This gives the color a natural blend and helps create fullness.

This waterproof product is supposed to stay put all day long. Even if you wipe your face or get it wet, it shouldn't run or transfer. When you're ready to take it off at the end of the day, swipe the official remover over your brows to lift the color. Some wearers find that their own gentle cleanser does the trick too.

What Users Say
No product gets high marks from every user, but this one comes fairly close. In general, beauty bloggers and reviewers are fans of the natural dimension and stay-put color that they get with SmartBrow.

Some beauty bloggers have even given this makeup the overnight test. They've gone to bed with it still on their eyebrows to see how it would look in the morning. Not only did the product not rub off on their pillowcases, but it also stayed on their brows pretty well all night long. Testers note that the color is slightly faded in the morning but still mostly in place.

Of course, every product has a few pitfalls. For this one, the most common complaint is that the liner brush has gotten bigger and less precise over the years. You might consider buying a separate tiny brush to use.

Users also note that the water-resistant quality isn't foolproof. It holds up through sweating and swimming, but if you then rub your face on a towel to dry it, the makeup may come off.