For some cases, it may be needed.
Heroin too.
Amphetamines are useful for ADHD.
Cocaine is useful for some types of surgery. It's a local anesthetic.
You don't need to look bald. You can get a hair transplant. But does it look real?
A diet rich in vegetables protects your teeth from tooth decay.
A strong skin peel can make a 70 years old woman look 30, but it's risky.
You can even fix your teeth, at your cosmetic dental surgeon.
A tip, fake teeth do indeed look fake.
You can make yourself thinner through surgery and/or medicine. Again, there are risks and implications.
You don't need to have eye sight problems. You can try lasers surgery, but it comes with its own risks.
You can even permanently change the color of your eyes with implants. I don't know what the risks of doing so, are.