Something else to consider for “flattering” light is diffusion, contrast and symmetry. If you put a high CRI light directly under your chin in a pitch black room you’re going to look like a monster no matter how pretty you might be. The diffusion makes a difference in the flattery. Also the placement. A particularly forgiving lighting arrangement is called “clamshell” lighting which places two diffuse sources like a large book or corner of a room in front of your face or slightly above eye level. Finally, you may or may not want some backlighting or other way to fill in the room. In a small space with white(ish) walls, you’re bound to get reflections; maybe some sunlight through a window. However, consider at high-end retailers how they have semi-spotlights (less or no diffusion) which can be flattering on hair; conveniently called hair lights or rim lights which should fall on your head and shoulders. Color temperature doesn’t matter that much in terms of color perception because your eyes will adjust. However, I find that cooler whites help me see details better. If I was doing makeup, I’d prefer a cooler white so I wouldn’t miss anything. Then again I’m not a makeup artist. Bear in mind that you usually don’t want to mix color temperatures so if you plan to use existing lights, match your new lights to those or change everything. These are from film techniques but a face is a face. Incidentally it is not CRI which makes a good film light but TCLI. CRI is for eyes, the other is for cameras. Answer from HexspaReloaded on reddit.com