Make sure you're washing your butt correctly Goldstein. People use wet wipes and then pull up their pants, so what happens is that the moisture sits there, said Dr. Goldstein. The moisture just festers, and it causes a change in bacteria and leads to irritation. This is basically the opposite of what you're after.

Persistent odor after washing is rarely a sign of "dirty" hygiene and is usually caused by residual bacteria or moisture. Your skin is home to various bacteria that break down sweat into odorous acids. If you use a very gentle or moisturizing body wash, it may remove surface dirt but fail to eliminate the odor-causing microbes that live deep in the skin folds. Furthermore, the area is prone to "intertrigo"—a condition where trapped moisture leads to bacterial or fungal overgrowth. In 2026, dermatologists often recommend using a pH-balanced antibacterial cleanser or a wash containing benzoyl peroxide for targeted areas to kill the specific bacteria. Another common culprit is incomplete drying; putting on underwear while the skin is still damp creates a warm, humid environment that allows bacteria to multiply immediately after you step out of the shower. Diet can also play a role, as compounds from foods like garlic or spicy spices can be excreted through the apocrine sweat glands in the groin area. If the odor persists despite using a hairdryer to stay dry and switching to breathable cotton fabrics, it may be worth checking with a doctor for a minor localized yeast infection.