Smegma is the thick, white, cheesy substance that collects under the foreskin of the penis. It’s more common in uncircumcised men who don’t clean that area well enough. Women can also get smegma in their vaginal area. It’s normal to have some smegma. And it usually isn’t a health problem, but bacteria can grow in it and smell bad. Those bacteria can also make the head of the penis swell up and hurt. Keeping your penis or vagina clean is the best solution. What’s in Smegma? Tiny glands called sebaceous glands in the penis and vagina release smegma to lubricate these areas. It’s made from a combination of fatty oils,…