Am I a good candidate if I only have dark circles but no bags

It depends on the cause. If your dark circles are primarily due to a deep tear trough creating shadow, fat repositioning can fill that area effectively. However, dark circles are often multifactorial — skin pigmentation, visible blood vessels beneath thin skin, or bone structure can also contribute. If non-structural causes are dominant, additional or alternative treatments such as laser, PRP, or skin boosters may be more appropriate. A consultation will determine the best approach for your specific case.