Similar to other tattoos, microblading involves a needle piercing your skin. But a little topical numbing cream goes a long way. "Our clients describe the sensation 'like having your eyebrows tweezed,'" says Piret.

Unlike regular tattoos, microblading doesn't last forever. "Over time they just get lighter and eventually disappear," says Piret. If you want to maintain the look, you'll have to have your brows touched up every six months to a year.

The list of contraindications is long. If you're pregnant, nursing, diabetic, have glaucoma or a heart condition, or you're prone to keloid scarring, then you shouldn't have your eyebrows tattooed. But nothing on that list is especially surprising. "You know the state of your health better than anyone," says Piret. "If you have any medical issues that you feel might be a contraindication, then we suggest you get clearance from your doctor."

If you've had eye surgery (like Lasik), then you should wait six months before you get eyebrow tattoos . Avoid retinols for a week before your treatment and 30 days after -- it can fade the pigment. And if you're breaking out around your brows, Piret says to wait until it's cleared up and everything is completely healed.

Before you book a brow appointment, you'll want to do your research. Check out the professional's website, Facebook page and Instagram account to see before and after photos. If their style isn't your style -- i.e. you want minimal and they do bold -- keep looking. And, as with all cosmetic treatments, be wary of deals. "Personally, I would steer clear of Groupons as they are usually offered by artists that are just starting out in the business," says Kernahan. "That's not to say that it's a bad thing; however, you want to do your homework and see what kind of training, certification, and artistic skills that person has." She also suggests looking for proper health department licensing and whether the artist is a member of the Society of Permanent Cosmetic Professionals.

While the cost of microblading varies by city, you can expect to pay $600 to $1,200 for the eyebrow tattoo treatment. When you consider all the time you'll save not filling in your brows every morning, that figure starts to seem like a reasonable investment.