ARU Toothpaste Makes the Case for a Shorter (and Cleaner) Ingredient List You Can Actually Pronounce

You’ve stopped buying mass-market cookware. You read labels at the grocery store, and you’ve thinned out the under-sink collection of cleaners that don’t earn their place. The thing you’re still using twice a day, often without a second glance, is your toothpaste.

ARU toothpaste makes the case that a category most people don’t think about deserves the same attention you’ve already given to everything else in the bathroom.

After all, conventional tubes list 15 to 20+ ingredients with names that don’t disclose what they’re doing. Some are doing real work. Many are doing the work of marketing — foam, color, sweetness. The contrast against products built around shorter, transparent formulations has gotten harder to ignore.

Is ARU Toothpaste an SLS-Free Toothpaste?

SLS, also known as sodium lauryl sulfate, is the foaming agent in most conventional toothpastes. It’s the reason your brush feels like it’s doing something. It’s also a detergent originally developed for industrial cleaning, and at the concentrations used in toothpaste, it’s regulated as safe.

SLS has a well-documented tendency to irritate soft tissue in the mouth and contribute to canker sores. A 2019 systematic review published in the Journal of Oral Pathology & Medicine found that SLS-free toothpaste reduced the number of ulcers, ulcer duration, number of episodes and ulcer pain.

“Minor changes in a toothpaste can really make a difference in a patient’s quality of life,” Diana Messadi, a professor and the chair of oral medicine, oral pathology and orofacial pain at the UCLA School of Dentistry, told The Washington Post.

All four ARU formulas are SLS-free. Instead, they use cocamidopropyl betaine, a coconut-derived surfactant that creates gentle foam and lifts away plaque and debris without irritating gum tissue.

What’s Actually in ARU Toothpaste

The line comes in four formulas. None contain SLS. All are free from microbeads, dyes, parabens, phthalates, triclosan, artificial flavors and animal testing.

Each formula shares eight base ingredients, including cocamidopropyl betaine. Sorbitol sweetens and prevents drying. Cellulose gum keeps the paste smooth and stable. Silica adds texture and scrubs surface stains. A blend of eucalyptus, spearmint and peppermint oils handles flavor and fresh breath. Potassium sorbate prevents mold and bacterial growth in the tube. Stevia rebaudiana leaf extract rounds out the flavor without contributing to decay. Water binds it all together.

From there, each formula adds one or more targeted actives.

4 ARU Toothpaste formulas, Chosen With Purpose

The fluoride-free whitening toothpaste adds sodium bicarbonate to polish surface stains, calcium carbonate as a gentle abrasive and calcium peroxide to break down deeper stains through slow oxidation. For anyone evaluating the best whitening toothpaste options without bleach trays or strips, it’s a quiet, daily-use alternative.

The fluoride-free toothpaste for sensitive teeth uses hydroxyapatite, the same mineral that makes up natural tooth enamel. Hydroxyapatite toothpaste works by remineralizing teeth and filling the micro-fissures that cause hot, cold and sweet sensitivity. It’s the formula to reach for if you’ve quietly been avoiding ice water for years.

The gum health formula adds stannous fluoride, which strengthens enamel while reducing the bacterial overgrowth and nerve stimulation that lead to bleeding and inflamed gums. The cavity protection formula uses sodium fluoride, the standard cavity-fighting active, which remineralizes enamel and increases its resistance to acid erosion.

Fluoride vs. Fluoride-Free Toothpaste

To fluoride or not to fluoride is one of the bigger debates in oral care right now.

The scientific consensus is clear. Fluoride is safe at the concentrations used in commercial toothpaste, and the American Dental Association still recommends fluoride toothpaste for daily use.

“The fluoride will help reduce the demineralization process, which is the first stage of tooth decay,” says Dr. David Okano, a periodontist and assistant professor at the University of Utah School of Dentistry. “Also, if you have the demineralization but not yet a full-blown cavity in the tooth, the fluoride can be taken up into that demineralized area to help it remineralize.”

A growing number of consumers still choose to skip it. The most established concern is dental fluorosis, a cosmetic condition that develops when young children ingest too much fluoride while their permanent teeth are forming, which is a frequent factor in choosing a kids toothpaste.

Some adults report sensitivity or irritation from fluoride toothpaste. Others simply prefer shorter, cleaner ingredient lists. ARU’s fluoride-free whitening and sensitive formulas are designed for that audience, while the gum health and cavity protection formulas keep fluoride for those who want it.

Which ARU Toothpaste Is Right for You?

Four formulas, four straightforward decisions.

If you want whiter teeth, go with the whitening toothpaste. Do your gums bleed when you brush or floss? The gum health formula is the one. If you want standard daily protection, the cavity protection formula covers it. Do hot and cold make you flinch? The remineralizing toothpaste with hydroxyapatite is built for that.

Both fluoride-free options double as an SLS-free toothpaste for anyone prone to canker sores or sensitive oral tissue.

The line is built around a simple idea worth paying for. You should know what’s in your toothpaste, and what’s in it should serve a purpose. All four formulas are available at Walmart and on Walmart.com.