For a more realistic look, turn on chromatic aberration to add subtle "prism" effects to the light. Pro Tips for Better Glows
Native glow often creates a "dark ring" around the object. Deep Glow avoids this entirely, producing a smooth, outward falloff. after effects deep glow
: Adds color fringing to the edges of the glow for a more organic, cinematic lens look. For a more realistic look, turn on chromatic
Here is everything you need to know about using Deep Glow—and how to fake it if you're on a budget. Why Deep Glow? For a more realistic look