It will help lift the root, opening up your eyes, and make your lashes look longer. Have super-straight lashes? Opt for a heated lash curler, which will help the hairs stay curled all day. Just don’t clamp down too hard or you’ll end up with a severe bend.

Yes, it’s an extra step, but it makes all the difference. A primer coats the lashes and helps mascara cling to them, giving you a more dramatic effect that will last far longer than mascara applied on bare lashes. We like Lancôme Cils Booster XL Super-Enhancing Mascara Base, which adds unbelievable volume. Apply it and wait till it’s dry before you go in with your mascara.

To buy: $26; nordstrom.com

If your lashes are sparse, you can fake fullness with eye shadow. “I like to use an angled brush dipped in a dark shade and push it right into the lash line,” says makeup artist Lusine Galadjian, who has worked with Victoria Justice and Ashley Greene. Don’t worry about creating a perfect line—it’s supposed to look natural.

The darker the mascara, the better. Galadjian chooses tubes labeled “thickening,” “nonflaky,” or “volume,” a sign that the formula is the right consistency. Try: Elizabeth Arden Lasting Impression Mascara. The tapered wand has a variety of bristles that grab every lash and create a full fan effect.

“If it’s too liquidy, it won’t thicken, whereas drier ones tend to clump,” she explains. Swipe on a few coats from root to tip while rotating the wand for even coverage.

To buy: $24; elizabetharden.com

To look awake like Megan Fox (above), apply mascara to both the top and bottom lashes. Then, for a final coat, wiggle the wand horizontally at the base of lashes, then sweep up and forward. You’ll get volume at the roots without having to glop on too many coats.

To prevent spider lashes, use a separator like MUA Lash Separator. Run it through lashes post-mascara application to separate hairs that may have stuck together.

To buy: $9; muapro.com