Is microneedling really good for fine lines and acne? i'm 21yrs old& have acne spots and scars plus under-eye lines. or should i get a peel?

Honestly: At 21 years old, I would recommend trying a good peel first. Microneedling is better for age wrinkles.

Start with: Agree that at you age, you would do best to start with a series of peels and optimizing your daily skin care to include a lactic acid based cleanser, a retinol or tretinoin, daily broad spectrum antioxidant sunscreen to keep your skin healthy and reduce breakouts. Your physician may place you on a course of antibiotics to help with breakouts as well. Peels also improve fine lines.

Microneedling: Microneedling treatments such as Infini can be effective on fine lines and acne scarring. However, you must try other options first to see if that will helps. There are creams and peels that can aid.