The penis area hair loss reason can be different. The rubbing of garments or activities is a common one. Also, psoriasis or fungal infections may cause hair to drop in that location. Use antidandruff medicine if it itches or appears red, keep it neat and dry besides dressing with comfortable clothes regularly is essential for preventing more hair fall in this region. 

For whiteheads, you can use retinoid cream or gel. And for large pores, exfoliating scrub or a clay mask can be helpful as they help reduce the size of pores. Moisturizers and sunscreen( atleast 30 SPF) can also be useful to keep your skin healthy. 

Some­times, accidentally biting the toungue or eating hard foods cause­s bruising. These bruises usually he­al within one or two weeks by the­mselves. To ease­ any pain or discomfort, try soft foods and avoid spicy or acidic ones until healing occurs. If it persists, visiting a doctor may provide help.

It’s common to get gray hair early, especially if it started in your teenage years. This can be due to genetics, stress, or diet. While it might seem worrying, gray hair usually isn't a sign of a serious health problem. You can choose to use hair dye or embrace your natural look. Remember to eat a balanced diet, manage stress, and take good care of your hair.