HEMP CBD can enter your body through eating hemp foods, putting CBD drops under tongue, or topical (applied to skin). This category of products is usually used to treat a local pain or inflammation. Redness and bruising is a form of inflammation and all of these products have been tested and do reduce redness organically.
For best results, type this into a google search - CBD and your ECS. The info you find should inform you about your body's Endocannabinoid System (ECS). Your ECS regulates your mood, feeling and pain sensation.
Results wil vary depending upon your ECS, how much CBD your body can use/process and you may have major pain relief, or minor pain relief. Like most things that are good for you, contined use over time to the inflammation area should result in relief from inflammation.