White pimple on penis shaft. Learn about 7 home remedies to treat genital warts. Molluscum is pink or brown depending on your skin colourand they usually have a little dimple on top. Learn about the congenital condition that causes baby boys to develop two pensises. Home Find a Lab Zip Code: Skin that is abraded or cut is especially susceptible to HPV infection. A study in macaques reveals that targeting a brain region with noninvasive, low-intensity ultrasound can alter a specific decision-making process. Some home remedies, such as apple cider vinegar and lemon juice, are too acidic for sensitive skin and people should not use them on the penis. This is not a serious matter and no treatment is needed. This skin disorder can appear anywhere on your body.