how long after tummy tuck can i drink alcohol?

I advise you to visit an experienced dermatologist for your marks. Depending on the severity of your mark, the dermatologist will suggest treatments like laser treatments etc. 

The treatment for scars on the nose and cheeks due to specs and acne will depend on the type of scars you have and the severity of them. Treatments can range from laser resurfacing, chemical peels, dermabrasion, microneedling, and even fillers. The cost of these treatments can vary widely depending on the type of treatment chosen and the area being treated. It is best to consult with a dermatologist to get an accurate cost estimate for the treatment you are considering.

At 19, your body is still developing, and breasts can still get bigger until your early 20s. No, there are no pills or drugs that are capable of increasing the size of the breasts in any considerable way. It is necessary to understand that the size of the breast is defined mainly by the genetic factors and the hormones of the body. 

You need good moisturizer and sun screen after chemical peel treatment

The most effective treatment for a sebaceous cyst is a surgical removal which can be performed by plastic surgeon, dermats, or general or breast surgeons.