The short answer: Three months from the day you open it. Write that date on the tube, because you will not remember it — and keep a spare in the drawer, because the reason most people keep an old mascara is that throwing it out means having none. Past three months the formula dries, clumps, and carries enough bacteria to give you a stye or conjunctivitis.
1. Date the tube the day you open it
This is the rule Nikol chose to bring to HSN when she was the beauty expert on The Beauty Report, because so few people follow it.
The logic is simple once you say it out loud: you take a wand out of a tube and touch it to your eye, multiple times a day, then put it back in the dark and the damp. Bacteria accumulate. "You don't want to get pink eye, you don't want to get a stye."
She uses a small label maker and writes the date on the side. Her own experience with the alternative is the honest part: "I used to say, oh right, February 2nd, I'll remember. And then weeks would go by and I would be like, was it January, was it December? It was such a problem."
Keep a backup, or you will not toss it
"I always have extra mascara in the lineup. I'm never going to toss my mascara and then go to buy it and be like, oh, it's out of stock." The three-month rule only survives contact with real life if replacing the tube is frictionless.
2. How to revive a mascara that has gone dry
Around the two-to-three-month mark a creamy formula starts to tug through the lashes and stops separating them. Two fixes:
Warm water. Cap the tube tightly and stand it in warm water for a few minutes. The formula loosens and goes back to applying wet.
A couple of eye drops. Nikol's second option is adding a drop or two into the tube to re-wet the formula. Worth being clear-eyed about the tradeoff: anything you add dilutes the preservative system, so treat this as a way to finish a tube you are already inside the safe window on — never as a way to stretch a tube past three months. As she puts it: "if it's over three months, you really can't do that."
3. Bend the wand
This one changes mascara for people who struggle to reach the base of the lashes.
Instead of pulling the wand straight out, draw it out only to the tip, then gently bend the stem over — lightly, without forcing it. You now have an angled wand, and an angled wand can sit flat against the lash line in a way a straight one cannot. Not every wand tolerates it, so go gently the first time.
If getting to the base is your persistent problem, the wand angle is usually the cause rather than your hand. Once you can reach the root, the front-loading technique becomes available to you.
4. Do your eyes before your foundation
Nikol has taught this in every tutorial for years, and the reason is purely practical.
Do mascara last and one slip means you are removing mascara from finished foundation, which takes the foundation with it, leaves a raw patch, and forces you to rebuild that section of your face. Do your eyes on bare skin and a stray mark comes off with a swipe of remover, then foundation goes on over the top. Nothing to repair.
5. Curl, mascara, then curl again with heat
Her sequence for a curl with staying power: manual curler on bare lashes, mascara, then a heated curler to mold the lashes into shape. Timing matters — go back in with heat before the lashes are stuck together, and never with a curler you have heated yourself with a blow dryer. The full lash-curl method covers both, including why she refuses the blow-dryer version.
6. Paint the lower lashes with a small brush
Getting mascara onto lower lashes without printing it on your skin is genuinely hard with a wand. The workaround: load a thin, tight eyeliner brush with mascara from the wand and paint the lower lashes one at a time.
This is the fix for anyone whose lower lashes simply do not show — particularly blonde and red hair, where the lashes are there but invisible. Painting them individually gives you what a tint would, without the tint. Any fine detail brush works; there is one in the Essential Makeup Brush Set.
7. The vertical pass for doll lashes
For a dramatic, wide-open eye: apply your normal mascara, then take a volumizing formula, turn the wand vertical, and push straight up through the lashes in sections.
Working in sections rather than sweeping across is what produces the separated, elongated, doll-like look. The vertical angle deposits product along the length of each small group rather than flattening them together.
8. Stop treating mascara as one product
"It's kind of funny that we see mascara as, oh, I only need one mascara." You can layer and mix:
| Combination | What it gives you |
|---|---|
| Volumizing base, lengthening on top | Thickness and length from formulas that each do one well |
| Black on top lashes, dark brown underneath | Definition above without a heavy line under the eye |
| Regular on top, waterproof on the bottom | Stops lower-lash transfer on oily or watery eyes |
| Navy or auburn on top, brown underneath | Color that reads as definition rather than as makeup |
Her closing note is an invitation rather than a prescription: experiment with formulas, textures, and colors and find what your eyes actually respond to. Different lashes want different things.
Frequently asked questions
How long does mascara last after opening?
Three months. After that the formula dries out and clumps, and bacteria transferred from your lashes on every use have had long enough to build up, which risks a stye or conjunctivitis. Write the opening date on the tube, because you will not remember it.
How do you fix dry, clumpy mascara?
Cap the tube and stand it in warm water for a few minutes to loosen the formula. A drop or two of eye drops also re-wets it, though anything you add dilutes the preservatives — so use either fix only on a tube that is still inside the three-month window, never to extend an old one.
Why can't I get mascara to the base of my lashes?
Usually the wand angle. Pull the wand out only as far as the tip and gently bend the stem so it sits at an angle, and it will lie flat against the lash line. Not every wand tolerates being bent, so do it lightly.
Should you do eye makeup before or after foundation?
Before. If mascara transfers onto bare skin it comes off with one swipe. If it transfers onto finished foundation you have to remove the foundation with it and rebuild that area.
How do you apply mascara to lower lashes without a mess?
Load a thin, tight eyeliner brush with mascara from the wand and paint the lower lashes individually. It coats every lash without the wand printing product onto the skin, and it is the best option for blonde or red lashes that do not show.
How do you get doll-like lashes?
Apply your regular mascara, then take a volumizing formula, turn the wand vertical, and push straight up through the lashes in small sections. The vertical angle and the sectioning create the separated, elongated look.
Can you use two different mascaras together?
Yes, and it is worth doing. Volumizing under lengthening, black on the top lashes with dark brown or waterproof underneath, or a colored formula on top with brown below — each combination solves a different problem.
Do you need to replace mascara even if it looks fine?
Yes. The visible signs — drying, clumping, tugging — lag behind the bacterial load, which is the actual reason for the three-month limit. A tube that still applies well can still cause an eye infection.
Start here
Do two things today: write the date on the mascara you are currently using, and put a spare in the drawer so the three-month swap costs you nothing. Then, if reaching the base has always been the difficulty, try the bent wand — or a wand built to get in there in the first place. The application side is covered in how to apply mascara on thin, straight lashes, and the curl side in how to make a lash curl last all day.
