Antibacterial Soap vs Plain Soap: What the FDA Found
Antibacterial soap promised extra protection for decades. When the FDA asked for proof, manufacturers could not provide it. Here is what that means for your sink and shower.
Key takeaways
- In 2016 the FDA removed triclosan, triclocarban and 17 other actives from consumer antiseptic washes.
- Manufacturers had not shown those products worked better than plain soap and water, or that daily use was safe long term.
- A few actives, including benzalkonium chloride and chloroxylenol, were deferred and still appear in some hand washes.
- Plain soap works by lifting germs off the skin so water can rinse them away.
For years, antibacterial soap was sold as the responsible choice for families. Then the US Food and Drug Administration asked a simple question: does it actually work better? The answer reshaped the soap aisle. This guide to antibacterial soap vs plain soap explains what the FDA found, what is still on store shelves, and why a plain bar of chemical free soap remains the everyday standard.
What makes a soap "antibacterial"
An antibacterial or antiseptic soap contains an added active ingredient meant to kill or slow the growth of bacteria. Because it makes a germ killing claim, the FDA regulates it as an over the counter drug, not as a cosmetic. The quickest way to spot one is the Drug Facts panel on the package, listing an "active ingredient" with a percentage.
Plain soap, by contrast, makes no drug claim. It removes germs mechanically rather than trying to kill them on contact.
What the FDA found
In 2013 the FDA proposed that manufacturers of consumer antibacterial washes provide data showing two things: that their products were safe for long term daily use, and that they were more effective than plain soap and water at preventing illness or the spread of infection.
In September 2016 the agency issued its final rule. For 19 active ingredients, including triclosan (common in liquid hand soaps) and triclocarban (common in bar soaps), manufacturers had not provided the evidence. Those ingredients could no longer be marketed in consumer antiseptic wash products, and companies had until September 2017 to reformulate or remove them.
The FDA also noted open questions about some of these ingredients, including animal studies suggesting triclosan may affect hormone regulation, and concern that widespread use could contribute to bacterial resistance. Those were reasons for caution rather than proven harms in people, but without evidence of a benefit, the balance did not favor keeping them. The main site covers the full story of triclosan and why the FDA pulled it.
What the rule did not cover
- Three deferred actives. Benzalkonium chloride, benzethonium chloride and chloroxylenol (PCMX) were set aside so manufacturers could gather more data. You may still find them in hand washes.
- Hand sanitizers. Leave on rubs like alcohol based gels fall under a separate rule. The CDC recommends sanitizer with at least 60 percent alcohol when soap and water are not available.
- Health care products. Surgical scrubs and products used in hospitals are regulated separately.
How plain soap removes germs
Soap molecules have one end that clings to water and one end that clings to oils. Many germs sit in the oily film on our skin, and some viruses are wrapped in a fatty outer layer that soap can disrupt. When you lather and scrub, soap loosens that film and lifts it, along with dirt and microbes, so running water can carry it off.
Plain soap is also gentler on the habit that matters most: washing often. Hands that are cracked and sore get washed less carefully, so a mild bar that leaves skin comfortable can support better hygiene than a harsh product used reluctantly. If your hands dry out from frequent washing, a little balm or oil at night helps keep the skin barrier comfortable.
That is why technique matters more than the label. The CDC's advice is simple: wet your hands, lather the backs, between the fingers and under the nails, scrub for at least 20 seconds, rinse well under running water and dry with a clean towel. A plain bar does this job well, which we cover in handwashing with natural soap.
Antibacterial vs plain soap at a glance
| Antibacterial wash | Plain soap | |
|---|---|---|
| How it works | Added active plus surfactants | Lifts and rinses germs away |
| Regulated as | Over the counter drug | Soap or cosmetic |
| Proven extra benefit for everyday home use | Not shown to the FDA's satisfaction | Standard public health advice |
| Label clue | Drug Facts panel | Ingredients list only |
What to look for on the shelf today
- Check for a Drug Facts panel. If you see one, read the active ingredient. Benzalkonium chloride is the most common in current hand washes.
- Be skeptical of percentages. "Kills 99.9 percent of germs" is often measured in a lab on a surface, not on your hands during a 20 second wash.
- Remember the quats. Benzalkonium chloride belongs to a group called quaternary ammonium compounds. The main site explains quats in hand soaps and wipes and why some people choose to avoid them.
- Read for scent, too. Many antibacterial washes also contain undisclosed fragrance; see fragrance in soap.
Is bar soap a germ magnet?
A common worry is that a shared bar spreads germs. Studies have found bacteria living on used bar soap, but research going back decades suggests those bacteria are not readily transferred to the hands of the next person who washes. A bar that drains and dries between uses is less hospitable to microbes than one sitting in a wet dish. We go through the evidence in is bar soap sanitary.
What about tea tree or "natural antibacterial" soap?
Some natural soaps include tea tree oil, which has been studied in the lab for its effects on microbes. In a rinse off bar used for well under a minute, it is best thought of as a scent and a pleasant clean feeling, not as a drug. A soap that claims to kill germs is making a drug claim, and honest small makers avoid that language. If you like that earthy scent, read tea tree and cedarwood soap.
When stronger products make sense
There are settings where antiseptics have a clear role: hospitals, clinics, caring for someone with a weakened immune system, or following a doctor's specific instructions for wound care. Those situations call for a health care professional's guidance. For ordinary daily washing at home, plain soap and water is what public health agencies recommend.
Our take
We make plain soap and we are comfortable saying so. Our Body Bar is olive, coconut, shea, castor and avocado oils turned into soap, with essential oils for scent and no antibacterial actives. Paired with good technique, that is all most households need. To see what else is worth leaving off the label, read ingredients to avoid in soap.
From the ranch
Made in small batches, without the ingredients discussed above.
Questions people ask
Is antibacterial soap better than regular soap?
For everyday use at home, the FDA found no evidence that consumer antibacterial washes prevent illness better than plain soap and water. That is why it removed 19 antibacterial actives, including triclosan and triclocarban, from those products in 2016.
Did the FDA ban antibacterial soap?
The FDA did not ban all antibacterial soap. It ruled that 19 specific active ingredients could not be used in consumer antiseptic washes. Three others, including benzalkonium chloride, were deferred for more study, so some antibacterial hand washes remain on sale.
Does plain soap kill germs?
Plain soap mainly removes germs rather than killing them. It loosens the oily film where microbes sit so water can rinse them away, and it can disrupt viruses with a fatty outer layer. Scrubbing for at least 20 seconds matters most.
Is benzalkonium chloride safe in hand soap?
Benzalkonium chloride is still permitted while the FDA reviews more data. It can irritate skin in some people, and questions about resistance have been raised. If you prefer to avoid it, plain soap and water is the standard alternative.
Sources and further reading
- US Food and Drug Administration (FDA), Safety and Effectiveness of Consumer Antiseptics; Topical Antimicrobial Drug Products for Over-the-Counter Human Use, Final Rule (2016)
- US Food and Drug Administration (FDA), Antibacterial Soap? You Can Skip It, Use Plain Soap and Water
- Centers for Disease Control and Prevention (CDC), Clean Hands: When and How to Wash Your Hands
- Heinze JE and Yackovich F, Washing with contaminated bar soap is unlikely to transfer bacteria, Epidemiology and Infection (1988)
This guide is for general education and is not medical advice. If you have a skin condition, allergy, or are pregnant or nursing, talk with your doctor or a board certified dermatologist about the products that are right for you.
