Cost: $250+
Lasts: 1 to 3 years
Who should do it: Someone with thin, sparse brows who fills them in every day; someone who wears eyeliner every day.

Why you should get it: If you fill in your brows or wouldn't be caught dead without eyeliner, then having "makeup" tattooed on will certainly save you some time. And the latest innovations in permanent makeup are not nearly as scary as the tattoos of years past. "Permanent makeup is semi-permanent by design," says Emilia Berry, founder of New York-based PermaLine Cosmetics. But, this is a good thing: "As we age, our features move gradually, so the eyebrows of today will not be proportionate 10 years from now." Plus, she points out that times and trends change, so the semi-permanent nature of the makeup allows you to change with the times (she points to the current eyelash enhancement trend that creates a thick lash base, versus the Cleopatra liner trend that was popular a few years back).

"The cost of the procedure is easily offset by freeing women from having to continuously purchase and use traditional makeup products," Berry says.

She uses micropigmentation and a hair-stroke technique to create natural-looking results -- similar techniques are used in other salons, which is why it's important to choose a technician who isn't going to tattoo your makeup on. (In addition to brows and lips, Berry also uses her technique to camouflage stretch marks and scars.) At Hibba NYC, a similar technique is used to fill in brows and deposits color into the first layer of the skin behind your brows. And, it lasts for a full year. Know before you go: Like any other tattoo, sun exposure can make the color change, turning a once brown brow a reddish shade. To prevent colors from fading, be sure to wear sunscreen. And, since it's not actually permanent, you'll probably have to go in for touch-ups eventually.

Cost: $15-$28 per session
Lasts: 4 to 6 weeks
Who should do it: People with blonder-than-blonde lashes and brows; people who have thin brows; people with eye allergies who can't wear mascara; people who hate applying mascara or filling in their brows daily (read: virtually everyone can benefit from this service).

Why you should do it: The benefits of lash and brow tinting are plentiful," says Jodi Shays, owner of Queen Bee Salon and Spa in Los Angeles. People with blonde brow and lash hairs will notice a significant difference in the fullness, because the tint picks up every last hair. And if your lashes and brows are thinning -- but not blonde -- you can also expect to see fuller-looking brows or eyelashes. Plus, lashes sometimes appear lighter near the tips; having them tinted creates a more even, full look with no mascara required.

Know before you go: "If you're in the wrong hands with a tech who is not licensed to do this treatment you could get tint in your eyes, which will burn," says Shays. Make sure the place you are going has staff licensed to do the treatment -- and once you're in the treatment chair, make sure they have you in a sitting position. The places that lie you down don't understand that tint gets in your eyes this way.