Using butt enlargement or weight gain pills at ages 16 or 17 is generally not recommended without medical guidance. Cosmetic procedures should wait until your body has fully matured, and weight management should be approached through healthy nutrition and exercise with the advice of your doctor.

Liposuction is the best option to give a great result- a Surgery without any scar!

After a rhinoplasty, it is usually recommended to refrain from nose blowing for several weeks as the healing process can be disturbed. This can vary greatly depending on the surgical procedure itself and your individual healing timetable. It is necessary to follow the specific postoperative instructions of your plastic surgeon. They can give a tailored schedule when it is safe to return doing such activities as nose blowing. It is very important to have regular follow-up appointments so they can monitor your healing and ensure that you recover successfully.

After the rhinoplasty, you need to refrain from alcohol for at least two weeks. Sometimes surgeons can suggest an even longer period of abstinence. Alcohol, vasodilator–increases swelling and prolongs the healing process by intensifying bruising of inflammation. It also makes the blood thinner, increasing chances of bleeding and complications after surgery. On top of that, alcohol interacts poorly with any medications being prescribed to you during recovery like painkillers or antibiotics. Follow your surgeon’s particular advice and contact them directly for personalized information about alcohol intake after rhinoplasty.

The price of bikini laser hair reduction can vary widely, but it is more expensive than other areas of the body due to its sensitivity and the need for precision and is done by experienced doctor. The cost can range from around $100 to $500 per session. Keep in mind that multiple sessions are usually required for optimal results. 
You can read about the cost details here - Laser Hair Removal Cost in India

The decision to undergo plastic surgery, including facial procedures, is typically based on a combination of factors, including physical maturity, psychological readiness, and medical necessity. Many plastic surgeons require patients to be at least 18 years old or have parental consent for cosmetic procedures. . It is important to consult with a qualified plastic surgeon who can assess your particular case, discuss your concerns and goals, and provide appropriate guidance based on your unique circumstances. 

Minimum age to undergo Rhinoplasty is 18.

Complete growth of face occurs upto 18-21 yrs

As such there is no risk in surgery but better to wait 

Arm lift scars, as a medical professional would say, can take anywhere from one year or longer to completely heal and fade. But the ultimate look of scars may differ from person to another and is based on a patient’s skin type, as well as how closely they adhere to postoperative care guidelines. If you have any questions regarding the appearance or healing of your arm lift scars, it is advisable to speak with your surgeon. If necessary, you can go to a plastic surgeon who specializes in scar revision for additional assessment and management.

For gynecomastia seek advice from an endocrinologist or a plastic surgeon specialists to determine the cause and get appropriate treatments.. . which may include addressing underlying issues, lifestyle changes, medication, or surgery. 

Yes, non surgical treatment options like fillers or botox etc, can be used. But the doctor will have to first examine your condition regarding the rhinoplasty. Consult an experienced plastic surgeon.