Shared Retail Makeup Testers: How to Sample Without the Shared Applicator

The short answer: treat the applicator as the shared surface

A shared tester is not a hygienic sample. It is a product that many people have touched, and it may carry their skin, lip or eye flora. The U.S. Food and Drug Administration (FDA) says that testers at cosmetic counters are even more likely to become contaminated than the same products in your home, and its eye cosmetic guidance notes that the risk may be greater at retail stores "where a number of people are using the same sample product." If you decide to sample anyway, FDA's advice is consistent across both pages: use a new, unused, single-use applicator, such as a fresh cotton swab.

That advice points to the real decision at the counter. The question is not whether a display looks tidy; it is whether you can avoid the shared applicator and keep a shared product surface away from your eyes and lips. In practice that means never using a shared mascara wand or doe-foot applicator, never putting a tester directly on your eyes or lips, never dipping a used applicator back into the product, and asking for a sealed sample or a fresh disposable applicator instead. Hold off entirely if you have an eye infection or inflamed skin around the eye, and skip lip testers if you have an open lip sore or broken skin on or near the lips.

If you develop eye pain, a change in vision, marked swelling or discharge after using a tester, stop using eye makeup and seek clinical advice promptly; FDA advises discarding any eye cosmetics you were using when an eye infection occurred. A "sanitized" sign or a UV cabinet is not a substitute for a fresh applicator.

One boundary up front: this guide is about surface contact with retail testers. Permanent makeup and microblading place pigment into the skin, and FDA describes different infection risks for them, which are covered in a later section.

What FDA does and does not require for cosmetic testers

It is easy to assume that a product on a counter has passed some government hygiene check. It has not. Under federal law, cosmetic products and ingredients other than color additives do not need FDA approval before they are marketed. Companies that manufacture or market cosmetics are responsible for making sure their products are safe, and FDA can take action against cosmetics on the market that are adulterated or misbranded. FDA's microbiological safety page adds that products must not be prepared, packed or stored in a way that may have made them contaminated or harmful to health.

FDA has also said that no U.S. law or regulation requires cosmetics to carry specific shelf lives or expiration dates; determining shelf life is part of the manufacturer's responsibility. Some companies track how long products have been on store shelves and alert stores when it is time to discard them, but the law does not require companies to share that testing or tracking information with FDA. None of the FDA pages reviewed for this guide sets a hygiene standard, a replacement schedule or a certification for retail testers.

What FDA does provide is consumer advice. Its microbiological safety page lists the ways cosmetics can become contaminated, including contaminated raw materials, poor manufacturing or storage, an ineffective preservative system and, notably, consumer use "such as dipping fingers into the product." The same page tells consumers not to share cosmetic products because "you may be sharing germs," and notes that while injuries from contaminated cosmetics are not common, they can be serious; contaminated eye-area cosmetics are among the products FDA says have caused serious infections.

Two practical consequences follow. First, the absence of a warning or a recall is not evidence that a particular tester is clean, because no tester-specific hygiene testing is required. Second, a store's own hygiene language, such as "sanitized daily," is a marketing or operational statement, not an FDA standard. Judge it by what it actually covers, as discussed below.

The product-contact chain: surface, applicator, product and you

It helps to think of sampling as a chain with four links: the outside of the package and the display, the applicator, the product itself, and the place on your body where it lands. FDA's shelf-life guidance explains why the middle two links matter most: dipping fingers into a product adds bacteria and fungi that preservatives must then control, and applicators, "especially mascara wands," are exposed to microorganisms each time they are used. A tester multiplies that exposure across many users.

The table below maps common tester formats to the part that is shared, what you can reasonably ask for, and what to avoid. It is a comparison of contact routes, not a measured ranking of infection risk; no study cited here compared infection rates by format.

Two patterns stand out. Formats with a built-in applicator that returns to the container, such as mascara and doe-foot glosses, cannot be made single-use by the shopper; the only way to avoid the shared applicator is not to use it. Formats where you can take product out once with a fresh tool, such as pumps and jars sampled with a single-use spatula, fit FDA's advice more easily, provided the tool is never dipped twice. A fresh applicator removes the shared applicator from the chain, but it still touches whatever previous users left on the product surface. That is why the destination matters: the back of a hand is a different decision from an eyelid or the lips.

What the microbiology shows and what it cannot prove

Published work on testers is small and scattered across countries and settings. The studies below found microorganisms on shared cosmetics; none measured whether shoppers became infected.

The Algerian study is the most direct test of retail makeup testers, but it is preliminary, samples from one city collected in 2019, and reports isolates rather than illness. Its authors conclude that testers may act as reservoirs and pathways for antibiotic-resistant Gram-positive bacteria, which is a plausible-route conclusion, not a measured transmission rate.

The Portuguese pilot is more detailed and more cautious. It sampled every tester available for public use in the pharmacies visited, but most were skincare testers rather than color cosmetics: sunscreens (10 of 16 grew microorganisms), anti-ageing products (7 of 8), makeup (2 of 5) and anti-ageing eye products (1 of 3), among others. The staphylococci recovered were mostly S. epidermidis, followed by S. saprophyticus and S. aureus; the authors point out that these species are not clinically equivalent, since S. aureus is a recognized pathogen while the coagulase-negative species usually have lower baseline virulence. Its multidrug-resistance label means resistance in at least three antimicrobial categories among the agents the team could test, which is an operational definition rather than a full clinical one. The authors also note that EU acceptance criteria for finished cosmetics are stricter for eye-area and lip products than for general topical products, which is one reason eye and lip testers deserve extra caution.

The Iranian salon study is often quoted as if it described store testers. It did not. Its 52 items were powders, cream powders, mascaras and eyeliners in public make-up kits used on salon clients. It shows how badly in-use shared products can be contaminated, but its 100% figure is not an estimate for any retail counter.

The Demodex experiment answers a narrower question: can follicle mites survive long enough in makeup to be passed on? In the lab, mites partly immersed in lipstick lived longer than mites on a bare slide, while powder cream shortened survival. The authors conclude that cosmetics used by different people at short intervals can transmit Demodex. That supports caution with shared lip and eye products, but it does not show that this happens often at stores.

Which tester formats are easier to make safer

Because the evidence does not rank formats by infection risk, a practical comparison has to rest on two questions: can you take product out once with a fresh tool, and where will it touch you?

• Mascara and liquid liner. FDA's eye guidance says not to share or swap eye cosmetics, and its shelf-life guidance singles out mascara wands as repeatedly exposed to bacteria and fungi. A shared mascara tester combines both concerns, and there is no way to use it with a fresh applicator without the wand still returning to the tube. Treat it as a look-only product, or ask for a sealed sample.

• Doe-foot glosses and liquid concealers. The built-in applicator is shared in the same way. A fresh disposable applicator can take product from the tube, but only if each applicator is used once and goes nowhere near your lips before it is discarded.

• Bullet lipsticks. A fresh applicator avoids touching the bullet with your skin, but it still lifts product from a surface other people have touched. A hand swatch tells you most of what you need about color; the lips are a mucous-membrane site where the Portuguese authors note stricter EU microbiological limits apply even to new products.

• Powders and eyeshadows. Use a fresh applicator rather than display brushes or puffs, and keep eyeshadow testers off the lid and waterline. FDA advises avoiding eye cosmetics entirely if you have an eye infection or the skin around the eye is inflamed.

• Open jars. FDA identifies dipping fingers into a product as a contamination route, and an open jar invites exactly that. A single-use spatula, used once, is the workable option.

• Pumps, tubes and droppers. These generally keep the bulk of the product behind a nozzle, which makes it easier to dispense a fresh amount, but the tip can still be touched. Do not let the nozzle or dropper touch skin, and do not use the product on broken skin.

Across all formats, the destination is the variable you control most. Swatching on intact skin on the hand or arm keeps the shared surface away from the eyes and lips, which FDA's guidance treats as the sites where infection can become serious.

Hygiene claims at the counter: sanitized, UV, alcohol, single-use

Counter signage tends to compress very different practices into one reassuring word. Each claim is worth separating by what it would have to cover to matter: the display, the applicator, or the product itself.

The only study in this review that tested a disinfection method on cosmetics shows why dose and material matter. In a laboratory study of ultraviolet germicidal irradiation (UVGI) against SARS-CoV-2, concentrated virus deposited on lipstick and makeup powder needed a UVC exposure of 1,260 mJ/cm² to reach more than a 5-log10 reduction, while flat plastic needed 126 mJ/cm², ten times less. In the researchers' prototype, which delivered 4.2 mW/cm² at 30 cm, those doses corresponded to exposure times of 300 seconds and 30 seconds respectively. The authors attribute the difference to the poor penetration of 254 nm UVC in turbid, porous materials and conclude that UVGI can be a disinfection strategy for testers only with appropriate dosimetry.

The limits are important. The study tested one virus, in a laboratory, with a custom device. It was supported by the cosmetics company that manufactured the lipstick and powder, and two authors were employed by the company that built the UVC prototype. It does not tell you whether any retail cabinet delivers a comparable dose, and it does not show sterility against bacteria or fungi. A UV box at a counter may be doing something useful, but without information on dose, exposure time and the products it was tested on, a shopper cannot verify that it is.

Single-use applicators are the measure FDA itself recommends, and they work only as long as nobody double-dips. If a used applicator goes back into the product, every later user is exposed to whatever it picked up, and fresh applicators from then on cannot undo that.

If you already used a tester: stop-use and symptom questions

This section is not a diagnostic guide. It sets out the steps FDA recommends and the points at which professional advice makes sense.

1. Stop using the product. FDA's reporting page says the first step after a reaction or problem with a cosmetic is to stop using the product and contact your healthcare provider. Its eye guidance adds: if any eye cosmetic causes irritation, stop using it immediately, and if irritation persists, see a doctor.

2. Pause all eye makeup during an eye infection. FDA advises avoiding eye cosmetics if you have an eye infection or the skin around the eye is inflamed, and waiting until the area has healed.

3. Discard what you were using. FDA says to throw away the eye cosmetics you were using when the infection occurred, because they may now carry the same organisms. Do not try to clean or rescue them.

4. Do not improvise. Do not add water or saliva to products, and do not try home sterilization or self-treatment with leftover medicines. Let a clinician decide whether treatment is needed.

Not every reaction is an infection. A rash, redness or burning can also be irritation or allergy to an ingredient, which a clean sealed sample would not prevent. A clinician can help sort out which it is; noting the product name, shade, store and date of sampling makes that conversation easier.

You can also tell FDA. Its cosmetic complaint page invites reports of reactions such as a rash, redness, burn, infection or illness, whether or not they needed treatment, and of product problems such as a bad smell, color change, foreign material or other signs of contamination. Consumers can use the MedWatch online voluntary reporting form, mail or fax Form FDA 3500B, or call FDA's Food and Cosmetics Information Center at 1-888-SAFEFOOD (1-888-723-3366) and select option 4. FDA announced in 2026 that it is integrating its adverse-event reporting systems, so check the page for the current route. Separately, the Modernization of Cosmetics Regulation Act of 2022 (MoCRA) requires the company responsible for a cosmetic to report serious adverse events to FDA within 15 business days; that duty falls on the company, not on you.

Permanent makeup and salon shared kits are different exposures

Three situations are often lumped together, and they should not be.

Retail testers are products sampled by many shoppers, usually on intact skin, the lips or the eye area. The evidence above shows they can be contaminated; it does not quantify infection.

Shared salon kits are in-use products applied to many clients by staff. The Tabriz study found bacteria in all 52 sampled items and fungi or yeast in about one in five; Pseudomonas was the dominant species recovered from eyeliners. The same advice applies in principle, and the study's authors recommend that women avoid sharing cosmetics and avoid public make-up kits in salons, but the setting, product handling and evidence base differ from a store counter.

Permanent makeup and microblading are not sampling at all. FDA's fact sheet treats permanent makeup inks as cosmetics, but the procedure places pigment into the skin. FDA lists infection among the primary complications of tattooing: unsterile equipment and needles can transmit infectious diseases such as HIV, hepatitis and staph skin infections, and infections have also resulted from contaminated inks even when the artist followed hygienic procedures. Those risks come from breaking the skin and from the ink itself, and they call for different questions about equipment, ink and practitioner. A retail tester guide cannot answer them.

A store-counter checklist

Before you sample

• Skip eye testers if you have an eye infection or inflamed skin around the eye, as FDA advises for eye cosmetics generally.

• Skip lip testers if you have an open lip sore or broken skin on or around the lips.

• Decide in advance that eye and lip products will be judged on your hand or taken home as sealed samples.

At the counter

• Ask for a sealed sample first.

• If you sample, use a new, unused applicator, one per dip, as FDA recommends.

• Never use a shared mascara wand, doe-foot applicator, display brush or puff.

• Never dip a used applicator back into the product, and do not touch open jars with your fingers.

• Swatch on intact skin on the hand or arm, not on the eyes or lips.

• Ask what a "sanitized" or "UV-treated" sign actually covers; treat it as a question, not a guarantee.

Afterward

• Wash off the swatch when you are done.

• If irritation develops, stop using the product; see a doctor if it persists.

• For eye pain, vision change, marked swelling or discharge, stop eye makeup and seek prompt clinical advice; if it is an eye infection, discard the eye products you were using.

• Report reactions or visible signs of contamination to FDA.

• Do not attempt to sterilize products yourself or self-treat with leftover medicines.

Evidence limits and what would change this guidance

This guide is current as of November 9, 2026. Its practical advice rests mainly on FDA consumer guidance, which is general rather than tester-specific and does not quantify risk. The FDA eye cosmetic page was last updated in 2022, as was the shelf-life page; the microbiological safety and permanent makeup pages in 2024; the legal overview in 2025; and the complaint page in October 2026.

The microbiology comes from small studies in Algeria, Portugal and Iran, plus a laboratory mite-survival experiment from Poland. None measured infection in shoppers, and none can be generalized to all U.S. stores. The UV study was industry-supported and tested one virus with a prototype device. The advice here would change if FDA updates its cosmetic safety pages, if a study measures infections after tester use, if independent testing evaluates UV, alcohol or wipe methods on cosmetics, or if any cited study is corrected or retracted.

Sources

• U.S. Food and Drug Administration: Microbiological Safety and Cosmetics — how cosmetics become contaminated, including consumer use; advice not to share cosmetics; how to report a problem (content current as of October 15, 2024).

• U.S. Food and Drug Administration: Eye Cosmetic Safety — retail testers and single-use applicators, not sharing eye cosmetics, infection and rare blindness, discard and stop-use advice (content current as of June 28, 2022).

• U.S. Food and Drug Administration: Shelf Life and Expiration Dating of Cosmetics — testers more likely to be contaminated, fresh applicator advice, no required expiration dates, mascara discard guidance (content current as of February 25, 2022).

• U.S. Food and Drug Administration: FDA Authority Over Cosmetics — no premarket approval except color additives, company responsibility for safety, FDA action against adulterated or misbranded products (content current as of November 18, 2025).

• U.S. Food and Drug Administration: How to Report a Cosmetic Product Related Complaint — stop-use first step, what to report, consumer reporting routes, MoCRA serious adverse event reporting by companies (content current as of October 5, 2026).

• U.S. Food and Drug Administration: Tattoos & Permanent Makeup: Fact Sheet — permanent makeup inks as cosmetics; infection risks from unsterile equipment, needles and contaminated inks (content current as of October 15, 2024).

• Bedaida et al. (2025), Infection, Disease & Health: Makeup testers as reservoirs and transmission sources of antibiotic resistant bacteria — preliminary swab study of 325 makeup tester samples in Batna, Algeria; abstract reviewed.

• Ribeiro et al. (2026), Microorganisms: In-Store Cosmetic Testers Harbour Resistant Bacteria: A Pilot Survey in Portuguese Pharmacies — 42 pharmacy testers, contamination and antimicrobial susceptibility, with stated method limits.

• Dadashi et al. (2016), Health Promotion Perspectives: Bacterial and fungal contamination in shared cosmetic kits in women's beauty salons — 52 in-use salon kit cosmetics in Tabriz, Iran.

• Sędzikowska et al. (2021), Acta Parasitologica: Shared Makeup Cosmetics as a Route of Demodex folliculorum Infections — laboratory survival of Demodex mites in lipstick, mascara and powder cream.

• Ultraviolet germicidal irradiation is effective against SARS-CoV-2 in contaminated makeup powder and lipstick (2021), Journal of Photochemistry and Photobiology — laboratory UVC dose study; supported by the cosmetics manufacturer, with authors employed by the device developer.