Whether you're one who primps and preens in the mirror a lot or someone who barely glances at her reflection while removing the day's grime, two things have long made their presence known on your face -- your eyebrows.

"Brows frame your face," yada, yada say the experts, but after a while, it gets hard to figure out what to do with them. Let them grow in, pluck 'em out, thin them down, etc. It's all enough to, well, raise an eyebrow over.

"If you're sick of looking at the same tired shape you've had for years, give your brows a tweezing hiatus," says celebrity brow stylist Kristie Streicher. "It will do wonders for your face."

The natural brow shape -- which is back and better than ever -- can make you look prettier, younger and more rested, according to Streicher. The catch: It requires growing in all your natural brow hairs, which can take up to 10 months. (Longer than it takes to make an entire human being for those of you doing the math.)

At issue? Once you've messed with your natural brow shape, it's pretty hard to find it again. I learned this the hard way when I let a makeup artist talk me into pencil-thin '30s brows. But now, having followed Streicher's advice, I can attest that the results are totally worth it. (Yes, the first six weeks were brutal, but the process got way easier after that.)

Considering the change? Here are a few tips to help you get over the hump.

See 7 tips on growing out your dream brows.