The other experts here have highlighted some important points. To review, 1) Botox injections should be limited to the area lateral to the eye (the 'crow's feet), to avoid issues with lower eyelid swelling and impaired function. In my practice, I never inject Botox more toward the middle than the outer edge of the colored part of the eye. 2) Soft tissue fillers are a better choice for treatment of hollowness in the under eye region in many patients; others require eyelid lift surgery for the best aesthetic results. 3) Topical arnica montana gel is helpful for bruising in the first week after injectable treatments; later than this, it is not particularly effective. 4) Persistent bruising can be treated with specific lasers to help the body absorb the stain from the blood beneath the skin. Best of luck moving forward!