Non-Toxic Hand Soap: Skip Antibacterial, Refill the Pump

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Plain soap and water is what FDA tells consumers to use. The agency says there isn’t enough evidence that over-the-counter antibacterial soaps prevent illness better than plain soap, and in 2016 it ruled that triclosan and 18 other antiseptic ingredients could no longer be sold in consumer hand soaps, bar soaps and body washes. So the first step toward a non-toxic hand soap is to skip anything sold as antibacterial. FDA says a Drug Facts panel on a soap is the giveaway, and the active ingredient may be benzalkonium chloride, benzethonium chloride or chloroxylenol, the three it left on the market while makers gather more data.

Past that, “non-toxic” is the maker’s word and the ingredient list has to back it up: is the scent named or hidden behind “fragrance,” and is the preservative methylisothiazolinone, a contact allergen the EU now caps in rinse-off products? The bigger waste question is the bottle. Keep the pump already on the sink and change what goes into it. Plaine Products’ hand wash comes in an aluminum bottle that is mailed back and refilled, EcoRoots sells a bar with nothing added for scent, Dr. Bronner’s unscented castile soap dilutes to four times its volume of foaming soap, and Blueland’s fragrance-free tablets fit any 9-ounce foaming pump.

Affiliate disclosure: This article contains affiliate links. If you buy through them, The Zero Waste List may earn a commission at no extra cost to you.

Soap-lathered hands with interlaced fingers over a stainless steel sink, with water running from the tap
Plain soap and water, with the lather worked between the fingers. Photo by Sean Horsburgh on Unsplash

What the Antibacterial Rule Removed, and What It Left

FDA’s final rule, published in September 2016 and in force a year later, covered 19 active ingredients in consumer antiseptic washes, the products used with water: liquid, foam and gel hand soaps, bar soaps and body washes. Triclosan and triclocarban were the best known. Manufacturers had not supplied data showing those ingredients were safe for daily use over years, or better than plain soap at preventing illness and the spread of infection, so FDA classed washes made with them as misbranded new drugs that would each need approval. The rule counted more than 700 products affected.

Three ingredients were set aside rather than banned. FDA deferred its decision on benzalkonium chloride, benzethonium chloride and chloroxylenol while manufacturers run new safety and effectiveness studies, so washes made with them are still sold. FDA’s guide to spotting one is the word “antibacterial” on the label and a Drug Facts panel, because a soap marketed to kill germs is regulated as a drug. The rule doesn’t reach hand sanitizers, hand wipes or the antiseptic soaps used in hospitals and nursing homes.

Whether a plain soap has an ingredient list at all depends on what it is. Under FDA’s definition, true soap is made mainly of the alkali salts of fatty acids, cleans only through those salts and is sold only as soap. A bar that meets all three tests isn’t a cosmetic: FDA leaves it to the Consumer Product Safety Commission, outside the cosmetic labeling rules that require an ingredient list. FDA notes that very few true soaps are sold. Most cleansers, liquid or bar, are synthetic detergents, and a soap that promises to moisturize or scent the skin also counts as a cosmetic; cosmetics must list what is in them. A bar with a full list is simply easier to judge than one without.

Reading the Scent Line

An ingredient list can still say little about scent. FDA requires the list under a labeling law that can’t compel a company to give up trade secrets, and fragrance blends, mixtures of many natural and synthetic chemicals, are the ingredients most often protected that way. FDA adds that a product labeled “unscented” can contain a small amount of fragrance added to cover the odor of its other ingredients, and its advice to anyone sensitive to fragrance is to pick fragrance-free products and read the list.

The hand soaps below show the range. Plaine Products names every oil in two of its hand wash scents: lavender and bergamot in Citrus Lavender; rosemary, vanilla extract and mint in Rosemary Mint Vanilla. Its Cherry Almond list names cassia, clove and other oils, then closes with “natural fragrance ingredients,” which Plaine says come from essential oils and aromatic isolates of botanical origin. Plaine sells no unscented hand wash. Blueland’s scented tablets list “Fragrance,” which the company calls a natural and synthetic blend. Its fragrance-free tablet, Dr. Bronner’s unscented castile soap and EcoRoots’ oatmeal bar carry no scent ingredients on their makers’ lists.

Methylisothiazolinone and Other Preservatives

One preservative is worth finding before it reaches your hands several times a day: methylisothiazolinone, or MI. The American Contact Dermatitis Society named it Contact Allergen of the Year for 2013. Writing in Dermatitis that year, Mari Paz Castanedo-Tardana and Kathryn A. Zug reported that its use in U.S. cosmetics and toiletries was rising and that the usual patch test, which pairs it with methylchloroisothiazolinone, misses about 40% of people allergic to MI alone.

European regulators acted on that record. After the EU’s Scientific Committee on Consumer Safety found that no safe level had been shown for leave-on products, the EU banned MI in leave-on cosmetics from February 2017 and then cut its limit in rinse-off products, the category hand soap belongs to, from 0.01% to 0.0015% (15 parts per million) starting in 2018. MI is not on FDA’s list of prohibited and restricted cosmetic ingredients, so in the U.S. the label is the only check: look for “methylisothiazolinone” and its relative “methylchloroisothiazolinone.”

None of the four soaps compared below lists either one, and Blueland names MI among the ingredients its formulas are made without. Plaine’s hand wash uses sodium benzoate, potassium sorbate and gluconolactone; Blueland’s tablets use sodium benzoate and potassium sorbate. Dr. Bronner’s lists citric acid and vitamin E, and EcoRoots lists rosemary extract, but neither names a preservative. Blueland’s product page also lists “preservatives” among the things its formulas are free from, while its own ingredient list says those two keep the product shelf-stable. The list is the part to trust.

Plaine’s label has one more line worth knowing. Polysorbate 20 is what federal regulations identify as polyoxyethylene (20) sorbitan monolaurate, and “polyoxyethylene” is one of the name markers FDA uses for ingredients whose manufacture can leave traces of 1,4-dioxane. Plaine doesn’t say whether it tests for the byproduct; the non-toxic body wash guide explains where it comes from and which other names carry the same marker.

A seal can take over some of this reading. For a Safer Choice product, EPA reviews every ingredient, whatever its share of the formula, for cancer, reproductive and developmental harm, toxicity to aquatic life and persistence, then checks performance, pH and packaging and audits the product each year. Safer Choice is not a fragrance-free claim; EPA issues a separate label for that. Blueland says its hand soap tablets are Safer Choice certified in every scent except Cedar Fig.

Keep the Dispenser, Change the Refill

The lowest-waste hand soap is the one already in the pump. Finish it, then refill that dispenser instead of buying soap that arrives with another bottle and pump attached. The kind of pump decides the refill. Plaine says its hand wash isn’t designed for foaming pumps; Blueland makes its tablets for any 9-ounce foaming bottle; and Dr. Bronner’s tells buyers to mix its castile soap one part to three parts water for a foamer and use the mix within a month.

Match the hand soap to the pump you own: a liquid pump bottle takes a liquid hand wash such as Plaine's, whose aluminum bottle or glass gallon jar goes back to be refilled; a 9-ounce foaming pump takes a Blueland tablet or castile soap mixed 1 part to 3 water; a soap dish takes a bar; buying a new pump bottle each time leaves a bottle and pump to throw out or recycle
A pump already on the sink can take most refill formats. Based on makers’ own pages, November 2026. Graphic by The Zero Waste List.

Replace the hardware only when the pump itself starts to stick or leak. At that point the stainless steel soap dispenser comparison shows which dispensers are metal all the way through and which put a steel shell over a plastic pump.

Pump, Scent and Container for Each Hand Soap

Only Plaine’s container goes back to its maker. The bar and the tablets leave the least packaging behind, and the castile soap costs the least per ounce once it is diluted for a foaming pump. Prices are from each seller in November 2026.

Hand soap (size, price Nov 2026) Pump it needs Scent Preservatives listed Container and end of life Buy
Plaine Products Hand Wash
16 oz, $22 refill or $22.75 with pump; 1 gal, $135		 Standard pump, not foaming Named essential oils; Cherry Almond adds unnamed natural fragrance; no unscented version Sodium benzoate, potassium sorbate, gluconolactone Aluminum bottle or glass gallon jar, mailed back to be washed and refilled Buy at Plaine Products
EcoRoots Oatmeal Soap
4 oz bar, $12.97		 Soap dish None added None listed (rosemary extract) No bottle; sold plastic-free Buy at EcoRoots
Dr. Bronner’s Baby Unscented Pure-Castile Liquid Soap
32 oz, $17.17 at Amazon		 Standard pump, or 1 part to 3 water in a foaming pump None added None listed (citric acid, vitamin E) Bottle of 100% post-consumer recycled plastic Buy at Amazon
Blueland Foaming Hand Soap Refill Tablets, Fragrance Free
10 tablets, $24 at Amazon; each makes 9 oz		 Any 9 oz foaming pump None, on Blueland’s own list Sodium benzoate, potassium sorbate Paper pouches made for industrial composting Buy at Amazon

Plaine Products Hand Wash: the bottle comes back

Plaine Products sells its hand wash in a 16-ounce aluminum bottle whose pump stays on your sink. When the bottle runs low, you order a refill without a pump, move the pump across, and mail the rinsed empty back in the refill’s box under a prepaid USPS label from Plaine, which washes and refills it. The formula is mostly aloe juice, glycerin and soap made from coconut and safflower oils (sodium cocoate and sodium safflowerate), with plant oils and extracts. Plaine says the formula is not antibacterial, citing research that antibacterial soaps work no better than regular soap for everyday handwashing.

Buy the Hand Wash at Plaine Products

The loop has rules. Plaine will reuse a full-size bottle or gallon jar of its own if it comes back empty, rinsed and dry, without large dents or hard-water spots; travel sizes stay home to be refilled, and anything that fails the check goes into local recycling. A 16-ounce refill is $22, about $1.38 an ounce; auto-refill takes 10% off, and orders under $100 pay a flat $6 for shipping. The gallon, $135 or about $1.05 an ounce, comes in a glass jar for topping up the aluminum bottles you already have, and the jar goes back too. It is sold only in Citrus Lavender and Rosemary Mint Vanilla.

Households already returning Plaine shampoo bottles know the routine from the Plaine Products shampoo review; the hand wash empties travel back through the same mail-back program.

EcoRoots Oatmeal Soap: a bar with nothing added for scent

A bar does away with the bottle and the pump. EcoRoots’ Oatmeal Soap leaves out essential oils: it is soap made from organic coconut, sunflower, palm and safflower oils, with water, oats, shea butter and rosemary extract, and no essential oils. EcoRoots calls it fragrance-free and markets it for the face and body; at the sink it does the same job as any bar. It weighs 4 ounces and costs $12.97.

Buy the Oatmeal Soap at EcoRoots

The usual worry about a shared bar is what lives on it. The evidence is old and small but points one way. In a 1988 study in Epidemiology and Infection, John E. Heinze and Frank Yackovich, researchers at the bar-soap maker Dial, loaded bars with E. coli and Pseudomonas at about 70 times the levels reported on used bars, and none of the 16 people who then washed with them had a detectable level of either bacterium on their hands. The bars’ deodorant ingredient, triclocarban, doesn’t act on those bacteria, so it wasn’t what kept them off; it is one of the 19 ingredients the 2016 rule later removed.

A bar lasts longer on a dish that drains. A bar of soap at the sink is also one of the first swaps the zero waste bathroom guide lists, and when it wears down, its last slivers can be pressed onto the next bar.

Dr. Bronner’s Unscented Castile Soap: one bottle, diluted

Dr. Bronner’s Baby Unscented Pure-Castile Liquid Soap is what the company calls true soap, made from organic coconut, palm, olive and hemp oils with jojoba, plus citric acid and vitamin E, and nothing added for scent. It is concentrated. The maker’s foaming-soap directions call for one part soap to three parts water, which turns a 32-ounce bottle ($17.17 at Amazon, sold by Dr. Bronner’s) into about a gallon of foaming hand soap at roughly 13 cents an ounce.

Buy the Dr. Bronner’s Unscented Castile Soap at Amazon

Undiluted, it can go into a standard pump, though Dr. Bronner’s warns that its soap can clog and spurt in pump dispensers. The bottle is 100% post-consumer recycled plastic, and on its own site the company also sells the soap by the gallon and in a paper refill carton meant for topping up a bottle or foaming pump. Dr. Bronner’s lists dishes among the soap’s uses; for greasy pans, the plastic-free dish soap guide compares bars and refills made for that job.

Blueland Fragrance-Free Tablets: for a foaming pump you own

Blueland sells hand soap as dry tablets. Drop one into a 9-ounce foaming bottle of warm water and it dissolves within minutes, no shaking needed. Blueland says the tablets fit any 9-ounce foaming dispenser, so the one on your sink can stay. Its own Forever Bottle is glass; its hand soap pages don’t say what the pump is made of. The 10-tablet fragrance-free pack is $24 at Amazon, sold by Blueland, or $2.40 a bottle.

Buy the Blueland Fragrance-Free Hand Soap Tablets at Amazon

Read the pouch when it arrives. Blueland’s own ingredient list for the fragrance-free tablet runs to 12 items with no fragrance, while the Amazon listing for the same pack shows the scented tablets’ list, “Fragrance” included (November 2026). Both versions clean with sodium coco-sulfate and other coconut-based cleansers.

What Each Package Leaves Behind

Plaine’s aluminum bottle and glass gallon jar are meant to go back for washing and refilling. A bottle that fails the reuse check goes into local recycling, and Plaine points out that aluminum can be recycled again and again. The pump moves from bottle to bottle, and Plaine sells replacement pumps separately rather than shipping one with every refill.

EcoRoots’ bar leaves slivers and whatever it was wrapped in, and EcoRoots sells it as plastic-free. Dr. Bronner’s recycled-plastic bottle can keep serving as the jug you refill a foaming pump from, then go to curbside recycling where plastic bottles are taken. Blueland’s pouches break down only where an industrial composting facility accepts them; Blueland points buyers to findacomposter.com to find one and doesn’t claim they compost in a backyard bin. Its glass Forever Bottle, if you buy one rather than reuse a foamer you have, is meant to stay on the sink for good.

What to do with soap scraps

The last sliver of a bar is still soap. Wet it and the new bar, press the two together and let them dry, as Dr. Bronner’s suggests; the sliver then wears away as part of the new bar instead of going in the bin or down the drain.

Melting scraps into a refill for the pump is harder than it sounds. Dr. Bronner’s tried it with its own bar soap: the salt added to keep the bar hard thickens the dissolved soap into a foamy gel the company calls soap cream, which it says is unusable in a foaming pump and which keeps thickening over the following weeks. The pump is better kept for a liquid made for it. Scraps do more good at the sink, rubbed onto a dish brush or dissolved in a basin of very warm washing-up water, both uses Dr. Bronner’s gives for its bar.

A sliver also travels well. In a small tin it washes hands, and a shirt in a hotel sink when rubbed to a lather straight onto the wet fabric, as Dr. Bronner’s suggests for its bar. TSA allows bar soap in carry-on bags, while liquid soap has to come in containers of 3.4 ounces or less.

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