I'm 19 and have eye bags and dark circles , some wrinkle , and acne scars that make me much older uglier . is exfoliation can help me have fresh face ?

Try it: You could try a mild exfoliation thru some of the commercially available non prescription agents at a cosmetic counter at a nordstrom store first( macy's etc.). For a stronger agent you may need to visit with a dermatologist office in your area. It may very well be that you have eyelid bags that need to be cosmetically removed by an oculoplastic surgeon.

Sleep,allergy,smoke?: Dark under-eye areas can be caused by allergies, lack of sleep, chronic sinus inflammation, thinning skin, poor nutrition, skin damage from smoking, and others. Please pay attention to each an all of these before wasting money on unnecessary "spa treatments" of dubious, if any value.