How to Sanitize Lipstick for Safe Use

Scrape the top layer off the bullet, then hold the exposed surface in 70% isopropyl alcohol for about 30 seconds. Let it dry uncapped.

That works on your own lipstick, on kit sticks and on store testers, since the microbes that matter sit on the outer layer that touches the next mouth.

It lowers the risk without removing it. When University of Guelph microbiologist Keith Warriner sprayed alcohol on a lipstick he had contaminated with Staphylococcus aureus, bacteria dropped by 92%, not 100% (CBC Marketplace, 2018).

How to sanitize a lipstick bullet with isopropyl alcohol

The point of sanitizing is to kill or remove surface microbes on the bullet so the same lipstick can stay in use instead of being replaced.

It isn’t cleaning. Wiping off residue makes the bullet look fresh, while alcohol contact is what does the sanitizing.

You need 70% isopropyl alcohol (standard rubbing alcohol), tissues or cotton swabs, and either a small cup such as a shot glass or a spray bottle. A paper towel to stand the lipstick on while it dries finishes the setup.

The whole routine takes about two minutes, and most of that is drying time.

1. Twist the bullet up slightly, just enough to expose the top layer.
2. Wipe or shave that layer off with a tissue or cotton swab. It holds lint, dust and whatever the last application left behind.
3. Dip the exposed bullet into the alcohol for about 30 seconds, or spray it until the surface is evenly wet.
4. Lift it out, tap the drips off against the rim of the cup, and dab the surface gently with a tissue.
5. Stand the lipstick upright and uncapped on the paper towel until the surface is completely dry. Then cap it.

The usual accident is a snapped bullet from knocking it against the cup (wikiHow flags this one).

If it happens, a guide to repairing a broken lipstick can keep the shade out of the bin.

Capping too early is the other slip. Alcohol that hasn’t evaporated is still on the lipstick when it reaches your lips.

Scrape, dip, spray or spatula: which method fits?

Match the method to who touches the lipstick next. Personal lipstick gets a scrape and a dip, while client work calls for a spatula so the bullet is never touched.

Scraping is a first step, not a method. Every guide that recommends it pairs it with alcohol, because the shaved layer is only the part that touched the last mouth.

Spraying suits a counter or a set where lipstick changes hands every few minutes. QC Makeup Academy’s training notes have artists spray the bullet heavily after each application and wipe it off with a tissue.

The spatula method sidesteps the whole problem. The artist moves a small amount of product onto a mixing palette and applies it with a lip brush, a routine makeup artist James Vincent lays out in Beautylish’s kit hygiene guide.

Retail followed the same logic. Sephora told shoppers in March 2020 that testers would be disinfected multiple times a day, and advised them to test products on the arm with a disposable applicator.

70% or 90% isopropyl alcohol, and how long should it stay on?

Use 70% isopropyl alcohol and keep the bullet wet for about 30 seconds. A 90% bottle also works, but it dries faster and cuts into contact time.

Which concentration works best

The CDC’s Guideline for Disinfection and Sterilization in Healthcare Facilities (2008) puts the optimum bactericidal range for alcohol at 60% to 90% in water, with activity dropping sharply below 50%.

Undiluted alcohol performs worse than a mixture, because proteins denature faster when water is present.

Beautylish’s editorial guide prefers 70% because it evaporates more slowly than stronger solutions, which stretches contact time. James Vincent goes the other way and recommends 90% or higher for lipstick that goes straight onto a client, after wiping off the top layer. The “or higher” end reaches 99%, which falls outside the CDC range.

For a dip, the gap barely matters because the bullet stays submerged. It matters for sprays, which dry within seconds, and the CDC notes that alcohols evaporate rapidly, so extended exposure is hard to get unless the item is immersed.

How long to leave the alcohol on

Published advice runs from a few seconds to a quarter of an hour.

NewBeauty’s makeup sanitizing guide says a few seconds, and wikiHow’s lipstick guide says 15 to 30 seconds. The Aston University researchers on The Conversation (2019) say 30 seconds, as does Dr Whitney in Daily Vanity, which also puts the drying time of a spray at about a minute. At the far end, an Instructables guide asks for 15 minutes.

None of these cites a lipstick-specific test for its number.

Drying counts as contact. Beautylish’s guide lets the stick dry naturally so the alcohol keeps working as it evaporates.

The one lab test retrieved on lipstick is a 2016 UNLV master’s thesis by Vanessa Ortiz. It inoculated lipstick with S. aureus and compared isopropyl alcohol on a cotton pad against commercial sprays and wipes.

Every product reduced contamination. Leaving the bacteria on the lipstick for 0, 1 or 5 minutes before treatment made no statistically significant difference.

That test did not vary how long the alcohol stayed on, so 30 seconds remains a convention and not a measured threshold. It is cheap to follow and sits mid-range among the published numbers.

Sanitizing the tube, the cap and other lip products

Tubes and caps get an alcohol wipe. Liquid products need a clean applicator, and pencils need sharpening plus a spray.

The tube and the cap

The rim and collar sit against the bullet or the lips, and so does the inside of the cap. The outside of the tube picks up whatever is on your fingers.

Wipe all of it with an alcohol wipe, or a tissue dampened with 70% isopropyl alcohol, and let everything dry before capping.

Liquid lipstick and lip gloss

Wands carry everything back into the tube. With a liquid lipstick, that makes handling matter more than treatment, which is the call MasterClass makes for concealer, lip gloss and other liquids.

A clean spatula can move a portion onto a palette so a lip brush does the applying, the same artist routine used for bullets. Disposable applicators work as well, as long as every dip gets a fresh one.

Never redip a wand that has touched a mouth.

Lip liner and lip balm

Sharpening cleans a pencil but doesn’t sanitize it, according to the L Makeup Institute’s sanitizing guide.

The working routine from artist guides is to sharpen lightly for a fresh tip, then spray with alcohol and wipe with a tissue. Getting the cut right is its own skill, and there is a walkthrough on sharpening a lip liner properly.

Balm sticks have the same bullet shape, so the scrape, dip and dry routine applies as is.

Pencils are the easiest lip product to keep sanitary, since a fresh tip is one sharpen away.

What lipstick sanitizing removes, and what it leaves behind

Alcohol cuts the bacteria on a lipstick’s surface sharply, but it doesn’t sterilize the bullet.

The numbers behind that vary a lot depending on who ran the survey.

• In a Brazilian survey of 130 used lipsticks, 14.6% carried microbes, and only 1.5% went over 100 CFU/g (Pedroso and colleagues at Natura, 2003).
• Of 467 used products, 96 of them lipsticks, 79 to 90% were contaminated with bacteria (Bashir and Lambert, Journal of Applied Microbiology, 2020).
• Among 60 store testers (eyeshadow, mascara, lip gloss, blush and lipstick), 40% carried Staphylococcus aureus, per lab work at the University of Guelph for CBC Marketplace (2018).
• Alcohol sprayed on a lipstick contaminated on purpose brought S. aureus down by 92% (Keith Warriner, University of Guelph, for CBC Marketplace, 2018).

Which organisms turn up on used lipstick

Skin bacteria come up first in the surveys. A Jinnah University for Women study (2011) found Bacillus, Micrococcus sedentarius, Staphylococcus saprophyticus, S. epidermidis, S. aureus and Streptococcus. The Aston University samples added E. coli and Citrobacter freundii, which are gut-associated, alongside S. aureus.

Yeast shows up too. Candida albicans had its highest counts on lipstick in an Iranian Journal of Public Health study of shared-use salon cosmetics (samples collected in 2021, published in 2024).

The virus on the list is herpes simplex virus type 1 (HSV-1), the cold sore virus.

S. aureus is the one that matters most. Ortiz’s 2016 UNLV thesis calls it the organism most often isolated from cosmetics.

Why contamination rates differ so much

The Brazilian survey from 2003 found microbes in only a small minority of lipsticks, nearly all at low counts and mostly normal skin flora.

Aston’s 2020 work looks very different. Most of the used products it tested carried bacteria, across five categories that included lip gloss, mascara and beauty blenders.

Product mix and method explain the gap, not lipstick changing over the years. Aston’s range covers products that stay damp, which a dry wax stick doesn’t.

Wax and oil dominate the ingredients in a typical lipstick, which leaves little free water for microbes. Pedroso’s team found that was enough to keep counts low even though the preservatives failed the industry challenge test.

So sanitizing targets transfer and not growth, meaning the skin flora sitting on the outer layer that meets the next mouth.

Can you catch herpes from lipstick?

Yes, though how likely it is depends on which dermatologist you ask.

Herpes simplex virus from cold sore patients survived up to four hours on plastic in a 1982 Pediatrics study. That test used plastic, cloth and skin, not lipstick.

Mayo Clinic’s Dr. Dawn Davis says people carry the virus without sores and can pass it on through shared lipstick or lip balm. Weill Cornell’s Dr. Jack Levy points to asymptomatic shedding for the same reason.

UCI Health’s Dr. Janellen Smith (2017) calls infection from a tester possible but unlikely, because the virus doesn’t live long once shed. Her own policy is still not to share.

The sources retrieved here include no test of alcohol against HSV-1 on lipstick, so the sanitizing step is sensible but unproven for this virus. For the timing question, there is a separate look at how long the herpes virus survives on lipstick.

Where alcohol stops

Alcohol reduces. It doesn’t sterilize.

A second lipstick test sits alongside the UNLV thesis cited earlier. In Warriner’s bench test for CBC Marketplace, the count dropped sharply but never reached zero.

That test used a spray, which gives less wet time than a dip. No source retrieved here has measured a dip on lipstick.

Anything below the treated surface is untouched, which is why the top layer comes off first.

How often to sanitize lipstick, by situation

Professional and shared use have a clear rule, which is to sanitize after every user. For lipstick only you touch, no tested interval exists, so the routine is a judgment call.

Your own lipstick

Beautylish’s guide treats it as an occasional job and names cold season as the trigger.

Illness is the sharper one. Dermascope says to retire a lipstick sooner if it was used while you were sick, so after a cold, sanitizing is the minimum.

Shared lipstick

The default is not to share. The FDA warns that shared makeup can pass on an infection, and the dermatologists quoted by Mayo Clinic and TODAY say the same about lipstick, gloss and balm.

If you do share, hand over a spatula, palette and lip brush instead of the bullet. Sanitizing lowers the risk without promising zero, as Warriner’s bench test shows.

Makeup artists between clients

• Sanitize hands before each client
• Move product onto a palette with a clean spatula
• Spray and wipe any bullet that touched a face
• Sanitize hands again after a cough, a sneeze, or touching anything other than the client and the products

That is the routine QC Makeup Academy teaches, and it covers hands as well as product. Brushes, sponges and palettes need their own routine, which a guide to sanitizing the rest of a makeup kit walks through.

Store testers

Testers are the worst case. The FDA says they are even more likely to become contaminated than the same products at home, and advises trying them with a new, unused applicator such as a fresh cotton swab.

Cleaning often waits for the customer to ask. CBC Marketplace’s former-employee interviews found staff mostly sanitize testers only on request.

Swabs from Sephora, MAC, Shoppers Drug Mart and The Body Shop all grew staph and mold, even with alcohol and tissues at each location.

Warriner’s advice for anyone who must try one is to use the hand or arm, not the lips. A 2020 study of pharmacy lipstick testers in southern Brazil (Vassoler and colleagues) landed on the same fix as the FDA, disposable applicators.

When to throw lipstick away instead

Throw it out when it smells different, changes color or texture, grows mold, or has passed its period after opening. Sanitizing treats the surface and fixes none of those.

Signs sanitizing can’t fix

Any change from how it smelled when new is the first thing to check. Fading, darkening or an uneven cast in the color counts as well, along with a texture that has gone dry, cracked, hardened or separated.

Mold spots on the bullet or inside the case end the question. Alcohol on the surface leaves the rest of a moldy lipstick in place, and a Jinnah University paper (2011) notes that mold can grow on the stick while it sits in its case.

The FDA ties the other changes to heat, sunlight and air, which alter color, texture and smell over time.

How long lipstick lasts after opening

No U.S. law sets a shelf life for lipstick or requires an expiration date on it, and the FDA treats determining shelf life as the manufacturer’s job (FDA, page current as of 2022). Published rules of thumb disagree.

The spread runs from six months to three years. A period-after-opening symbol, an open jar with a number and the letter M, beats every rule of thumb when it is printed on the pack.

Alcohol can’t restore a preservative system that has worn out. The FDA notes that preservatives break down over time, letting bacteria and fungi grow, and what that does to your lips is covered in a look at the side effects of expired lipstick.

Storage that protects shelf life

Keep lipstick out of hot cars and direct sun, since the FDA says heat speeds preservative breakdown. Damp bathrooms are a bad spot too, because moisture helps bacteria and fungi grow.

A cool, dark drawer does the job.

The decision rule is simple. Any sign above, or a lipstick past its period after opening, goes in the bin, and everything else gets sanitized.

Lipstick Sanitizing FAQ

Is vodka a good substitute for rubbing alcohol on lipstick?

No. U.S. vodka is bottled at a minimum of 40% alcohol by volume (27 CFR 5.142), below the 50% mark where the CDC says germ-killing drops sharply.

Dr Whitney, quoted by Daily Vanity, names vodka as an option, but 70% isopropyl alcohol is the stronger choice.

Can I use hand sanitizer on my lipstick?

Only in a pinch. The CDC sets a floor of 60% alcohol for hand sanitizer, so a qualifying product kills germs.

Gels also carry glycerin and thickeners (Michigan State University’s Center for Research on Ingredient Safety), which stay on the bullet after the alcohol evaporates.

Will rubbing alcohol ruin my lipstick?

No, a short dip doesn’t change it. The Aston University researchers say the 30-second dip leaves the lipstick unaffected.

One beauty blogger (Project Vanity) cautions against dousing the bullet, which can alter the formula.

Does freezing a lipstick or passing it over a flame sanitize it?

No test backs either method. One Instructables guide freezes lipstick overnight without citing evidence.

The FDA warns that heat changes a lipstick’s color and texture and speeds preservative breakdown, which rules out a flame.

When Replacing a Lipstick Beats Sanitizing It

Lipstick sanitizing pays off only inside a lipstick’s shelf life. The limit is whichever comes first, a used-up bullet or a passed period after opening, unless the stick shows signs of spoilage sooner. No retrieved source counts how many scrapes and dips one bullet survives.

The cost is product. Each scrape removes a layer, so a stick sanitized often protects its user while it shrinks.

When you sort a collection, exposure decides the order. Sticks that have touched another mouth go first, along with any used through a cold or cold sore, because every extra user adds another person’s skin flora. Sticks only one person uses can wait.

Once sorted, storing makeup in a cool, dry place keeps them that way.

This advice was verified in October 2026. A lab test showing a different hold time, or alcohol failing against HSV-1 on lipstick, would change it.

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Andreea Sandu

Andreea Sandu is a working makeup artist based in Bucharest. She's been doing makeup professionally since 2010, across bridal, editorial, film, commercial work, and runs Lipstick Queen.

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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