Will IPL help tighten skin under eyes?

No, IPL would not be the best option. IPL is not designed to tighten facial skin, rather it improves a variety of skin imperfections. Laser resurfacing would be a better option for tightening the skin under the eyes. 

There are better options to tighten skin on the lower eyelid. We would begin with topical creams to improve color and skin resiliency. Elevase Moisture Booster with Ceramides.  Also, fractional co2 laser is a great option with lighter skin.Best,Dr. Karamanoukian Los Angeles

IPL is a great technology for treating brown sun spots and broken capillaries.  While it also helps stimulate collagen production, it is not a tightening tool.  For the under-eye area, and for general skin tightening in areas where there are fine lines, I recommend treatment with DEEP FX.  With placement of protective eye shields, I am able to safely and effectively treat the eyelid skin up to the eyelash margins.Good luck!