Benzene has been found in some sunscreens, but it is not an ingredient in any sunscreen formula. It shows up as a contaminant, primarily in aerosol (spray-style) products. In 2021, independent testing identified 78 lots of sunscreens and sun care products containing benzene, a known carcinogen linked to blood cancers. That discovery triggered recalls of more than 75 spray-style products and reshaped how the sunscreen industry handles quality control.
How Benzene Gets Into Sunscreen
Benzene is never listed as an ingredient because no manufacturer adds it on purpose. It enters products as a contaminant through several vulnerable points in the supply chain. The most common source is aerosol propellants, the compressed gases (like butane and isobutane) that allow spray sunscreens to dispense from a can. These propellants are petroleum-derived, and benzene is a natural byproduct of petroleum processing. If a propellant batch isn’t sufficiently purified, trace benzene carries over into the finished product.
Propellants aren’t the only risk. Other petroleum-derived inactive ingredients, gelling agents, and compounds hidden under the umbrella label “fragrance” can also introduce benzene. The issue is fundamentally one of raw material quality rather than sunscreen chemistry itself.
Aerosol Sprays vs. Lotions
The contamination problem is overwhelmingly concentrated in spray-style sunscreens. Every major recall since 2021 has involved aerosol products. Johnson & Johnson’s voluntary recall, for example, covered five aerosol product lines: Neutrogena Beach Defense, Neutrogena Cool Dry Sport, Neutrogena Invisible Daily Defense, Neutrogena Ultra Sheer, and Aveeno Protect + Refresh, all in aerosol form only.
Lotion-based sunscreens have not been found to contain benzene. This makes sense given the contamination pathway. Lotions and creams don’t use propellant gases, which removes the primary entry point for benzene. If you want to minimize any risk, choosing a lotion, cream, or stick sunscreen is the most straightforward step.
Why Benzene in Sunscreen Matters
Benzene is classified as a Group 1 carcinogen, meaning there is sufficient evidence it causes cancer in humans. Its strongest link is to blood cancers, particularly leukemia. Workers exposed to airborne benzene at just 1 part per million over 40 years face an estimated 70% greater risk of leukemia compared to unexposed individuals, which is why occupational safety guidelines recommend keeping exposure below 0.1 ppm.
Sunscreen presents a different exposure route: absorption through the skin rather than inhalation. Research on dermal absorption shows that even at contamination levels below 0.1%, the amount of benzene absorbed through skin over time can be meaningful, depending on how much skin is exposed and how long the product stays on. One analysis of dermal exposure calculated a 42% increased leukemia risk in a modeled scenario, prompting researchers to recommend that the threshold triggering protective action be lowered tenfold, from 0.1% to 0.01% benzene concentration.
That said, the doses involved in occasional sunscreen use are far lower than chronic occupational exposure. The concern is cumulative: someone who uses a contaminated spray sunscreen daily over months or years accumulates more exposure than someone who applies it a handful of times each summer.
What the FDA Allows
The FDA treats sunscreens as over-the-counter drugs, which means drug-quality standards apply. Under international pharmaceutical guidelines, benzene should not be present in any drug product unless its use is truly unavoidable. Even then, the limit is 2 parts per million for products used at a dose of 10 grams per day, calculated to keep daily benzene exposure below 20 micrograms.
For sunscreen, which people often apply generously across large areas of skin, daily use can easily exceed 10 grams. That means manufacturers of heavily applied products need to set even stricter concentration limits to stay under the 20-microgram daily exposure ceiling. Products found above 2 ppm have been subject to immediate recall or blocked from distribution.
What the Industry Changed
After the FDA issued a benzene alert in 2021, both raw material suppliers and finished product manufacturers overhauled their testing protocols. Propellant suppliers now test for trace benzene and provide Certificates of Analysis with each batch. Finished product manufacturers have added quality controls during formula development to catch contamination before products reach shelves.
The industry’s trade group, the Personal Care Products Council, has endorsed a “Quality by Design” approach: controlling benzene at the raw material stage rather than relying on finished product testing alone. This aligns with established pharmaceutical manufacturing principles and mirrors how other low-level impurities are already managed in drug production. The result is a significantly tighter screening process than what existed before 2021, though no system eliminates risk entirely.
Choosing a Safer Sunscreen
The simplest way to avoid benzene is to skip aerosol sunscreens and use lotions, creams, or sticks instead. These formats have not been implicated in benzene contamination.
If you prefer spray sunscreens, check whether the specific product and lot number appear on recall lists maintained by the FDA. The independent testing company Valisure, which originally identified the contamination, also publishes lists of products in which benzene was not detected. These lists are available for free download and cover specific batches rather than entire brands, so they offer lot-level detail.
Mineral sunscreens (those using zinc oxide or titanium dioxide as their active ingredients) are another option. Because they rely on physical UV blockers rather than chemical filters and petroleum-derived inactive ingredients, they have fewer potential contamination pathways. They are widely available in lotion and stick formats.
Regardless of formulation, the health risk of skipping sun protection far outweighs the risk posed by trace benzene contamination in most products. Skin cancer remains the most common cancer in the United States, and consistent sunscreen use is one of the most effective ways to reduce that risk. The goal is not to avoid sunscreen but to choose a format and product with the lowest contamination potential.