For most Americans, soap is as essential to bathing as water, offering a fresh start against daily dirt, sweat, and bacteria. However, many dermatologists caution that soap may be doing more harm than good, stripping the skin of natural oils and disrupting its protective barrier.
Why Dermatologists Are Against Soap
Soap, whether in bar or liquid form, is made by combining fats or oils with sodium or potassium hydroxide. While this makes it highly effective at removing dirt, it also damages the skin’s natural lipid layer, leading to dryness, irritation, and increased vulnerability to infection, says Dr. Anthony Rossi of Memorial Sloan Kettering Cancer Center.
A study by David Voegeli, a nursing professor and immuno-pharmacologist, found that soap use weakens the skin barrier, with damage increasing the more soap is applied and rinsed off. The study also revealed that soap alters the skin’s pH, making it less effective at fending off harmful bacteria.
Beyond its cleansing effects, many soaps contain fragrances and preservatives that can trigger allergic reactions, says Dr. Rachel Nazarian of Mt. Sinai Hospital. “You wouldn’t tolerate perfume in your eye drops, so why put unnecessary chemicals on your skin?” she asks.
What to Use Instead
Dermatologists recommend switching to skin-friendly cleansers. Unlike soap, these products are pH-balanced, ensuring they clean without stripping away essential moisture. Brands like Cetaphil, CeraVe, and Aveeno offer cleansers that dermatologists widely endorse.
“Look for cleansers with ‘pH balanced’ on the label and avoid those with foaming agents like sodium lauryl sulfate, which can be too harsh,” Nazarian advises. Some bar cleansers, like Dove Sensitive Skin, are also safe options—despite being labeled as soap, they contain gentler ingredients.
How Often Should You Wash?
Opinions vary on how frequently to shower, but most experts agree a daily soap-down isn’t necessary. Instead, people should focus on cleansing odor-prone areas—armpits, groin, and feet—while letting water rinse the rest of the body.
“The natural lathering of water removes most bacteria,” Rossi explains, adding that over-cleansing can reduce beneficial microbes and potentially weaken the immune system.
However, active individuals who sweat a lot should still cleanse after workouts, but with a mild cleanser instead of soap. Those engaged in contact sports like boxing or martial arts may need more frequent cleansing to wash away bacteria picked up from others.
When Soap is Necessary
Handwashing is an exception—soap is essential after using the bathroom, handling raw food, or touching high-contact surfaces. Fortunately, the skin on hands is thicker and more resilient, making it less prone to damage from soap than other areas of the body.
Other Showering Tips for Healthy Skin
- Avoid hot water: Lukewarm showers (98-100°F) preserve moisture while reducing irritation.
- Skip loofahs: Instead, use a soft washcloth to prevent excessive exfoliation.
- Pat dry after showering: Rubbing with a rough towel can strip away protective skin layers.
- Apply moisturizer immediately: A fragrance-free lotion or emollient like Vaseline helps lock in hydration.
Final Takeaway
For most people, daily soap use isn’t necessary—and in many cases, it may be harming rather than helping skin health. Dermatologists encourage switching to pH-balanced cleansers, limiting soap use, and focusing on hydration to maintain a strong, healthy skin barrier.
