Why Washing Hands With Dish Soap Isn’t Always the Best Choice

Using dish soap to wash hands may seem like a quick fix when soap and water aren’t available, but dermatologists and public health experts warn it can cause skin irritation, dryness, and even long-term damage—especially for those with sensitive skin or conditions like eczema. While dish soap’s degreasing properties make it effective at removing grease and bacteria, its harsh chemical formulation is not designed for frequent skin contact, according to the American Academy of Dermatology (AAD). The warning comes amid rising concerns over hand hygiene in settings where hand sanitizers or proper soap are scarce.

Dish soap contains higher concentrations of surfactants and alkaline agents—such as sodium hydroxide—than hand soaps, which can strip natural oils from the skin and disrupt the protective barrier, said Dr. Rachel Nazarian, a board-certified dermatologist at the Icahn School of Medicine at Mount Sinai. “Repeated use can lead to cracked skin, increased susceptibility to infections, and even allergic reactions in some individuals,” she told News Directory 3.

The Centers for Disease Control and Prevention (CDC) emphasizes that while dish soap can kill some bacteria and viruses in a pinch, it is not a substitute for hand sanitizers containing at least 60% alcohol or liquid soap with water. “If you’re in a situation where you don’t have access to soap and water, using dish soap is better than nothing—but it’s not ideal,” said Dr. Jonathan Runstadler, a CDC epidemiologist. “The best practice remains washing with warm water and regular soap for at least 20 seconds.”

Research published in the Journal of the American Medical Association (JAMA) in 2023 found that frequent use of dish soap led to a 30% higher rate of skin irritation in participants compared to those using mild hand soap. The study, led by dermatologists at Harvard Medical School, noted that individuals with pre-existing skin conditions were particularly vulnerable. “Dish soap’s pH level is often between 9 and 12, whereas skin’s natural pH is around 5.5,” explained study co-author Dr. Emily Smith. “This imbalance can trigger inflammation and exacerbate conditions like dermatitis.”

Public health officials also caution that dish soap’s effectiveness against certain pathogens—like norovirus or Clostridioides difficile—has not been thoroughly studied. While it may remove visible dirt and some bacteria, its ability to inactivate viruses or spores remains uncertain. The World Health Organization (WHO) recommends hand hygiene products that meet specific microbiological standards, which dish soap does not consistently satisfy.

For those in emergency situations without access to proper hand hygiene products, experts suggest diluting dish soap with water (1 part soap to 10 parts water) to reduce skin irritation. However, they stress that this is a temporary measure and not a long-term solution. “If you’re relying on dish soap regularly, it’s a sign you need to find a safer alternative,” said Nazarian. “Your skin will thank you in the long run.”

What happens next? Public health campaigns may need to address the gap in hand hygiene access, particularly in low-resource settings where dish soap is sometimes the only option. Meanwhile, dermatologists urge individuals to prioritize skin health by using fragrance-free, moisturizing hand soaps and applying lotion after washing to restore the skin’s natural barrier.

The takeaway: While dish soap can serve as an emergency hand-cleaning agent, its long-term use poses risks to skin integrity and may compromise hygiene effectiveness. For daily use, liquid soap and water—or alcohol-based sanitizers—remain the gold standard.