I'd explain it, but it is probably better googling.
Smegma is a natural, harmless substance that builds up on the genitals from a combination of dead skin cells, oils, sweat, and other fluids:
- Location
In females, smegma collects in the folds of the labia minora and around the clitoris. In males, it collects under the foreskin.
- Appearance
Smegma looks like crumbly cheese and usually has a foul odor.
- Function
Experts believe smegma acts as a natural lubricant for the genitals. In males, it's thought to keep the area between the foreskin and glans moist to reduce friction and discomfort during sex.
- Prevention and treatment
The best way to prevent and treat smegma is to regularly wash the genitals and surrounding areas with clean water and soap. Use a gentle soap to avoid irritating the skin. Don't scrub, use harsh cleansers, or apply soap more than once a day.
- When to see a doctor
If you wash the area daily and still notice a cheesy discharge or odor, pain, discomfort, or changes in your skin color, see your doctor. Sexually transmitted infections (STIs) can have similar symptoms as smegma.