What skin type is contraindicated in IPL treatment?

I agree with both responses.  IPL treatment on lighter skin has fewer complications as long as proper settings and techniques were used.  Most IPL devices selectively target brown and red which makes it more risky for darker skin types.

I agree wholeheartedly with Dr. Rueckl. IPL is safest for skin types 1 and 2 (Caucasians), but with appropriate settings and technique can be very safe for types III (hispanic) and IV (very light African American) skin.

There are 5 levels for the Fitzpatrick scale for skin typing. 1 and 2 are safe for IPL. 3 is safe as long as you have a great experienced technician. Even 4 can be safe with low settings and long pulses. Skin type 5 is generally entirely discouraged from IPL treatments. "This answer has been solicited without seeing this patient and
cannot be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."