IPL Alternative for People with Sun Sensitivities?

IPL is a great treatment for red tones and broken capillaries, but can sometimes cause mild swelling on sensitive skin. The best treatment for these skin concerns is Cutera's Laser Genesis. It's a relaxing treatment that takes about 30 mintues and there is no downtime. It reduces redness, shrinks pore size, builds new collagen for improvement of fine lines and texture.

The best laser for your situation is not the Laser Genesis nor an IPL. Do a bit of research on "pulsed dye lasers" such as the Cynosure V-Star and Candela V-Beam. Chances are your dermatologist does not own these types of lasers but they are most commonly used for Rosacea, Port wine stains (red birthmarks) and other vascular lesions and veins.
The reason this laser is most suited for your condition is because they are designed with a target of hemoglobin (a component of the blood). Because the light energy is preferentially absorbed in hemoglobin, these lasers are more effective at getting rid of the redness you describe than either of the IPL or the Genesis.

Try not to be upset with your "well known cosmetic dermatologist" about the suggestion of IPL for your nose capillaries and overall evening of skin tone. It might well be an excellent choice for you. The warnings about sun sensitivity need to be taken into the proper medical context by your physician with you through an informed conversation. IPL does not include ultraviolet wavelengths of light, which is commonly what causes a "sun allergy" type of rash, so if performed properly and safely, with good post-treatment instructions to you (including avoiding sun), you may do very well with IPL. I recommend a small test area with the IPL after the discussion with the physician, and thoroughly educating yourself, which you are in the process of doing.