Bold brows are here to stay. And even if you weren't born with big, beautiful brows à la Cara Delevingne or Keira Knightley, you can still get the look at home. Whether your brows are fair, thin, over-plucked, or just don't stand out against your skin, the right products can truly transform them. However, not all of eyebrow tools are created equal, and selecting the right ones for you can be an overwhelming task. We got the scoop from celebrity beauty expert Tomy Rivero on how to choose the right tools for your brows (plus, four of our top picks).

The problem: Your brows are naturally fair

If you have light, sparse brows that don't stand out from your face, your best bet is a basic eyebrow pencil. "An eyebrow pencil is great for filling in gaps and making pre-existing brows more pronounced," says Rivero. Because pencils have a soft finish that looks natural on skin, it's also ideal for lighter skin tones. Start by drawing short strokes in sparse areas, then use the spoolie brush on the other end to distribute color and shape hairs.

We like: Hourglass Arch Brow Sculpting Pencil ($32, sephora.com)

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The problem: You have oily skin

With oily skin, some brow formulas may not stay put. The solution? Gel formulas: "If you have oily skin, choose a gel formula," says Rivero, who notes that these products are generally waterproof and provide definition without fading or smearing throughout the day. Learning how to apply a gel formula takes some practice, but they pack a lot of color and definition in just a few strokes—so it's a skill worth mastering. Be sure there's not too much formula on the brush before applying (there should be just enough to coat the bristles) then lightly comb through brows, focusing on the ends of the hairs instead of trying to touch the skin.

We like: Maybelline Brow Drama Sculpting Brow Mascara ($6, amazon.com)

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The Problem: You have barely-there brows

If your brows are over-plucked or naturally sparse, you may want to try a fiber formula. These products contain tiny hair-like fibers that latch on to brows to thicken and elongate them, giving a fuller (but natural-looking) appearance. "It's definitely a time investment and also takes some practice, but the finished look is very realistic to the naked eye," says Rivero. The final result? Your natural shape, only bolder. These are applied similar to gel formulas, but you'll want to hold a tissue under your brows as you use so fibers don't fall on the rest of your face.

We like:Â Benefit Gimme Brow Volumizing Fiber Gel ($19, amazon.com)

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Problem: You have full brows... but they lack "oomph"

If you have full eyebrows but want to make them really pop, opt for a powder formula. "An eyebrow powder gives you a lot of control, but it's best for deepening the color of existing brows," says Rivero. So if you're happy with the fullness of your brows but would like for them to stand out more against your skin, use a powder one shade darker than your natural hue to draw a few strokes throughout brows, and then use a spoolie brush to evenly distribute color.

We like: Ardell Brow Defining Powder ($4, drugstore.com)