If your lipstick has fuzzy green, black, gray or white growth and smells musty, it’s moldy, and there’s no saving it. White crystals that wipe off and leave the smell unchanged are wax bloom, which looks bad but is harmless.
Visible growth isn’t the only sign. In a 2020 study of 30 lipstick testers from pharmacies in southern Brazil, 40% failed the mold and yeast count (Vassoler et al., O Mundo da Saude).
Testers get used again and again by different people, so that figure reflects a high-exposure case, not the lipstick sitting in your bag.
How can you tell if lipstick is moldy?
Look for fuzz and sniff for damp. Fuzz on the surface or edges of the bullet, plus a musty smell, means it goes in the bin.
Growth tends to start on top of the bullet or along its edges. Green and black are the obvious colors, gray shows up too, and white counts when it’s fuzzy instead of powdery. Some growth looks slightly pink.
The smell is musty, like a damp basement. Rancid lipstick is different. It smells sharp and oily, like old cooking oil, and it has no fuzz.
A dry, draggy or crumbly feel points to age, not mold.
Bacteria leave no fuzz, so a clean-looking bullet can still be contaminated.
White spots with no fuzz and no odor are the tricky case, since bloom and sweating look alike at a glance.
How moldy lipstick differs from wax bloom, sweating and rancid oil
White crystals or powder that wipe off and leave the smell unchanged are wax bloom, not mold. Bloom stays white, while mold can also turn green, black or gray.
| Condition | What you see | Smell | Verdict |
|---|---|---|---|
| Mold | Fuzzy spots, green, black, gray or white | Musty, damp | Toss |
| Wax bloom | Tiny white crystals or a powdery film | Unchanged | Keep |
| Sweating | Oil beads on the surface | Unchanged | Keep, unless mold appears |
| Rancid oil | No fuzz, dry or crumbly feel | Sharp, oily | Replace |
A 2022 IFSCC conference study from Paragon Technology and Innovation identified the white crystals as stearic acid that migrated to the surface of the lipstick.
Crystal buildup rose with synthetic wax content across formulas holding 0 to 11% wax, and a 3 minute cooling time in the mold produced heavier sweating than 6 or 9 minutes (Habiburrohman et al., 2022). The bloom in that study was fatty acid, not a microbe.
Sweating is a separate thing. Temperature swings push oil out of the wax network and onto the surface as beads. On its own, that’s no reason to discard a lipstick.
Rancid oil is just the lipstick’s oils breaking down with age. You get a sharp smell and a dry, crumbly feel, with no fuzz.
Makeup forum users suggest warming a small spot with a hair dryer, since bloom melts back into the wax and mold stays put.
That is community advice, not a lab method, so let the smell break any tie.
In June 2019, buyers of Jaclyn Cosmetics’ first lipstick launch posted photos of black holes and hairy fuzz.
The brand said the dots were oxygen bubbles and the fibers came from workers’ white gloves, and it denied any mold (Tubefilter, 2019). That is the brand’s own explanation, not an independent test. Maybe it’s right. I still wouldn’t put that lipstick on my mouth to find out.
Fuzz in any color outweighs every other clue. When it is there, stop sorting and throw the lipstick away.
What causes lipstick to grow mold?
Mold needs moisture and food, and a temperature it can live in is easy to come by. Daily use covers the rest, since saliva, skin oils and humidity all end up on the bullet.
A steamy bathroom adds moisture, and so do sweating beads. Lips and fingers carry microbes and nutrients onto the bullet. FDA says sharing makeup increases the risk of contamination, and it flags products with no preservatives, or non-traditional ones, as higher risk too.
Sources disagree on how often mold takes hold. A Sephora community reply argues that lipstick, mostly pigment and emollient, is a poor food source, and that genuine photos of lipstick mold are rare.
The 2020 Brazilian tester study agrees the waxy base hinders growth, then counted live molds, yeasts and bacteria on the lipsticks anyway.
Waxes and oils dominate the ingredients in a lipstick formula. A typical one runs 15 to 25% wax and 65 to 80% oil, per the introduction of the 2022 IFSCC paper.
Read together, the surveys point one way. Handling raises the microbial load, yet unused stock is not clean either.
In Nigeria (Stanley et al., 2018), contaminants turned up in 80% of in-use facial cosmetics (lipsticks, eye shadows and foundations) and in 46.7% of unused ones, with 30 samples each. Added preservatives failed to hold the load at acceptable levels.
A UK study found bacteria in 79 to 90% of used products across five categories, lipstick and lip gloss included (Bashir and Lambert, 2020).
Back in Brazil, the 30 in-store lipstick testers held 1.0 x 101 to 7.3 x 103 CFU/g of molds and yeasts, and up to 1.9 x 105 CFU/g of bacteria (Vassoler et al., 2020).
Which microbes show up in contaminated lipstick?
Aspergillus and Penicillium turned up in used cosmetics, while Aspergillus and Rhizopus were found in unused ones (Stanley et al.). Candida albicans, a yeast, was found in used products.
The bacteria differ by survey. The Nigerian samples held Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus species and Pseudomonas aeruginosa. The UK samples held Staphylococcus aureus, Escherichia coli and Citrobacter freundii.
Only the molds produce visible fuzz. Staphylococcus and Pseudomonas leave nothing to see.
Is moldy lipstick dangerous?
Treat it as unsafe. The documented harm is contamination and irritation, not a proven case history for every moldy tube.
Used lipsticks carry Staphylococcus aureus and other pathogens (Bashir and Lambert, 2020). Molds and yeasts in cosmetics are linked to allergic contact dermatitis (Yadav et al., 2023), and Candida albicans is the most common cause of angular cheilitis, with Staphylococcus aureus behind it (StatPearls).
What the research doesn’t show is controlled evidence tying a specific infection to a specific moldy lipstick. It also doesn’t show that a lip reaction means mold, since allergic contact cheilitis (“lipstick cheilitis”) comes from ingredients.
Cheilitis is inflammation of the lips. In the angular form, saliva moisture softens the tissue at the corners of the mouth first, then Candida albicans or Staphylococcus aureus moves in (StatPearls).
Both organisms also turn up in the contamination surveys.
The same 2023 review calls the safety risk from contaminated cosmetics relatively uncommon. Uncommon is not zero, and the lips are a poor place to test it.
People with a mold allergy or asthma face higher risk, and so does anyone sharing the lipstick. U.S. EPA guidance notes that mold spores can set off allergy symptoms and worsen existing asthma.
Cold sores sit outside the mold question, but they raise the same sharing problem. The herpes virus can survive on a lipstick after contact, and FDA warns that sharing makeup increases contamination risk.
Expired lipstick without any fuzz is a separate case, because using lipstick past its date has side effects of its own.
Can you clean moldy lipstick, or should you throw it away?
Throw it away. Scraping off the top layer or wiping with alcohol removes what you can see and nothing else.
The advice splits, though. A lipstick retailer’s guide offers rubbing alcohol for “a little” mold, while other pages from the same retailer say scraping will not remove it and tell readers to discard.
Scraping clears the visible fuzz and leaves whatever sits underneath untouched.
Rubbing alcohol at best kills the mold on the surface. A NEHA guide to indoor mold, citing U.S. EPA (2025), says mold should be physically removed because dead mold can still cause allergic reactions.
That guidance covers buildings. The logic carries over to a product that sits on your mouth.
If you’re unsure about a lipstick, this is the order I’d check things in.
- Smell the bullet. A musty or damp odor ends the check.
- Look over the surface and edges in daylight for fuzz.
- Check the open date, or the period after opening printed on the pack.
- Think about what the lipstick touched. If you used it during a lip infection, retire it, the same rule FDA gives for eye makeup after an eye infection.
- If any step points to mold or contamination, discard it.
Cleaning is a fair option in exactly one case: a lipstick that is merely dirty, with no fuzz and no musty smell. Sanitizing a lipstick in that state is routine upkeep, not a rescue.
When you do toss it, bag it before it goes in the bin. OSHA’s mold fact sheet advises bagging mold-damaged materials. It also says to keep bare hands off the mold and avoid breathing the spores.
Lipstick shelf life, the open jar symbol and expiry dates
Dermatologist Dr. Michelle Henry puts lipstick at 6 months to 1 year after first use, with lip gloss on a shorter clock (CNBC, 2024).
Gloss runs shorter because its formulas are sometimes more water-based, so how long lip gloss lasts deserves its own check.
Henry suggests writing the opening date on each product. Most last at least two years unopened, and the clock that matters starts at first use.
Whether the pack shows a date, a symbol or neither depends on where it was sold. Regulation (EC) No 1223/2009, Article 19, draws the EU line at 30 months (HPRA, Ireland).
| Label item | EU | US |
|---|---|---|
| Date on the label | Required when shelf life is 30 months or less | No US law requires one |
| Open jar symbol (PAO) | Required when durability exceeds 30 months | Voluntary |
| Who sets the period | Manufacturer, backed by stability testing in the safety report | Manufacturer, as part of safety substantiation |
The open jar symbol is followed by the period, in months or years, that the product stays fit for use after opening (HPRA). A jar marked 12M means one year.
FDA calls expiration dates rules of thumb, and the real limit moves around. Heat or sunlight can end a product’s safe life early. Certain all-natural formulas run shorter too, since plant-derived ingredients can feed microbes. Products opened and examined by shoppers before the final sale are another case.
A well-stored product can outlast its printed date, FDA adds, which is why the smell and fuzz checks still outrank the calendar.
FDA still states that no US law requires expiration dates on cosmetic labels. Its August 2026 overview of the Modernization of Cosmetics Regulation Act (MoCRA) lists registration, product listing, safety substantiation and adverse event reporting, and adds no date rule.
Under MoCRA, companies must report serious adverse events, a category that includes infection, to FDA within 15 business days.
How to store lipstick so it does not grow mold
Store lipstick in a cool, dry drawer and handle the bullet as little as possible. Habits matter more than gear here.
A drawer or vanity away from windows and radiators works. Close the tube fully after each use so air and dust stay out, and pass a clean tissue over the top of the bullet now and then.
In public restrooms, open and apply lipstick somewhere else, because debris and bacteria settle on an exposed bullet there.
If a friend wants your shade, scrape a little onto a clean card or palette and apply it with a brush.
The Brazilian tester study reached a similar conclusion for stores, proposing disposable applicators for in-store testers (Vassoler et al., 2020).
Powders, creams and brushes follow the same cool-and-dry logic, which a broader guide on how to store makeup spells out.
Moldy Lipstick FAQ
Can an unopened lipstick grow mold?
Yes, though a white film on a tube you never opened is more often bloom than mold. Smell it first.
Fuzz or a musty odor means returning it, since stock can carry contamination before any use (Stanley et al., 2018).
Is lipstick that sat in a hot car still safe to use?
Usually, if it only softened. Heat pushes oil out of the wax as beads and later white crystals, which are sweating and bloom, not mold.
Check for fuzz or a musty odor before applying, and toss it if either shows up.
Is mold more likely in liquid lipstick than in a bullet?
Water content decides more than the format. Dermatologist Dr. Michelle Henry says anything water-based grows bacteria more readily (CNBC, 2024).
In a 2021 Indonesian study of four liquid lipsticks (three used by makeup artists and one new), two carried Staphylococcus aureus and one carried Candida albicans (Rahmah et al., Al-Hayat).
Is it safe to try lipstick testers in a store?
No, not directly on your lips. Testers pass through many hands, and FDA notes that products opened and examined before final sale can deteriorate before their date.
Swatch on the back of your hand, or ask staff for a disposable applicator.
Should lipstick be stored in the fridge?
Usually not. A cool, dry drawer at room temperature is the standard storage advice, unless the packaging says otherwise.
One commenter on the Chemist’s Corner formulators’ forum reported white powder bleeding out of lipsticks that had been refrigerated for a long time while being molded. That is anecdotal, so a short chill suits only a softened bullet.
What to Do if Your Lips React to Moldy Lipstick
Stop using the lipstick and contact a healthcare provider. After that, report the reaction to FDA. FDA’s complaint page (current as of July 13, 2026) puts medical care first because the agency does not give medical advice.
Persistent symptoms need a doctor sooner than most people expect. Clinical guidance reviewed by Dr. Roger Henderson (Healthwords, 2024) advises a visit if angular cheilitis shows no improvement after two weeks of treatment.
Reports do not require symptoms. FDA also takes complaints about a bad smell, a color change or other signs of contamination in the product itself.
The reporting system has changed. FDA launched its unified Adverse Event Monitoring System (AEMS) on March 11, 2026, and cosmetic reports that once went into FAERS are now part of it, so check FDA’s complaint page for the current form before filing.
Once the lipstick is out, sanitizing the rest of your makeup is the sensible next step for cosmetic hygiene.
She started writing on the site after fielding the same questions from clients and friends often enough to just write the answers down: which red won't turn orange on a warm undertone, how to keep lipstick from feathering into fine lines, why a "12-hour" formula rarely survives dinner.
Every review on the site follows the same rule she uses with paying clients: wear it first, then decide if it's worth recommending.
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