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When you’re the person who reads every food label, vets the cookware in the kitchen, and picks out kids toothpaste for the bathroom drawer, the moment you flip over your own tube of toothpaste tends to be deflating.
There are 15 to 20+ ingredients on most conventional tubes, with names you can’t pronounce, doing things you don’t fully understand. Some of them are essential. A lot of them aren’t.
ARU toothpaste was built around that gap — shorter formulas, ingredients with a purpose, and four versions to match what each person in the house actually needs.
Matching the Right ARU Toothpaste to Each Person in the House
ARU has four formulas, and the easiest way to choose between them is to think about what each person actually needs.
- Want whiter teeth? Choose the whitening toothpaste. It’s positioned as the best whitening toothpaste option in the lineup, with sodium bicarbonate to polish surface stains, calcium carbonate as a gentle abrasive and calcium peroxide to break down deeper stains through slow oxidation.
- Anyone wincing during ice cream? The sensitive formula is the line’s toothpaste for sensitive teeth and the only hydroxyapatite toothpaste of the four, using the same mineral that makes up natural tooth enamel to remineralize teeth and fill the micro-fissures behind hot, cold and sweet sensitivity. It also functions as a remineralizing toothpaste for daily use.
- Bleeding or inflamed gums? Choose the gum health toothpaste. It adds stannous fluoride, which strengthens enamel while reducing the bacterial overgrowth and nerve stimulation behind irritated gums.
- Want standard daily protection? Choose the cavity protection toothpaste. It uses sodium fluoride, the standard cavity-fighting active, to remineralize enamel and resist the acid erosion that causes decay.
The whitening and sensitive options are fluoride-free toothpaste choices. The gum health and cavity protection options include fluoride. If you have kids with developing teeth, opt for the fluoride options.
ARU Is an SLS-Free Toothpaste Line
Every ARU formula is an SLS-free toothpaste. Sodium lauryl sulfate is the foaming agent in most conventional toothpastes and the reason your brush feels like it’s doing something. It’s a detergent originally developed for industrial cleaning, and at the concentrations used in toothpaste it’s regulated as safe. It also has a documented tendency to irritate soft tissue and worsen canker sores.
A 2019 systematic review published in the Journal of Oral Pathology & Medicine found that SLS-free toothpaste reduced the number of ulcers, duration of ulcer, 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.
ARU’s formulas also leave out microbeads, dyes, parabens, phthalates, triclosan, artificial flavors and animal testing for a cleaner ingredient list.
Fluoride vs. Fluoride-Free Toothpaste: What the Experts Say
This is the question most parents ask when shopping for kids toothpaste and family tubes alike. 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.”
The most well-established reason some families skip fluoride is dental fluorosis, a cosmetic condition that develops when young children ingest too much fluoride while their permanent teeth are still forming. Some adults also report sensitivity from fluoride toothpaste. That’s why the fluoride-free whitening and sensitive options sit alongside the fluoride formulas in the ARU line, giving households flexibility tube by tube.
All four ARU toothpaste formulas are available at your local Walmart and on Walmart.com.
Production of this article included the use of AI. It was reviewed and edited by a team of content specialists.

