Blisters to Chest, Back and Legs After IPL

Blisters mean there was at least a superficial burn.  The settings on an IPL device prior to treatment must take into account the person's skin type (not just what is observed, but actually determined by an administered questionnaire) and the amount of sun exposure the person has had.  The IPL device works by treating a more pigmented area in a field of less pigmented areas, so if the person's skin type is IV or higher or if a person has had recent sun exposure, there will not be preferential treatment of more pigmented areas and there will be a higher risk of side effects, like burns.

Even with proper settings, there is always a risk of a potential burn or blisters.  That is something you should have been aware of.  Most superficial burns heal without scarring.  The goal now is to prevent and/or treat any infection in the area and keep the blisters covered with antibiotic ointment and dressing.  See your dermatologist to evaluate the lesions for infection.

Hi.   IPL treatments to the skin are high energy applications that are to help destroy superficial pigmented areas or superficial blood vessels. The correct energy delivered is important, Too little and you get poor results. Too much and you can get a burn. The area treated cannot be tanned nor can you be a person of much color. The whiter the skin the less likely you will get a burn, everything else taken into consideration. Even skin next to a tattoo treated with IPL might burn if the IPL is too close to the tattoo. Possibility of burns should be discussed as part of the informed consent because it is one of the well known risks. Since you will be now healed, I'd just suggest a good sunscreen for these areas of injury if they are exposed to the sun. If areas of injury seem to be getting thick then see your MD as specific scar management treatments may be needed. Fortunately most IPL burns heal without scars.

Although you will likely heal up without scarring, blistering indicates a thermal injury from the IPL and is not an appropriate end-point of IPL treatment.  While any treatment can have complications, it is always best to indicate when something didn't go as planned and explain the expectations going forward.  I would agree that silver sulfadiazine is a good topical treatment for the blisters until they heal up.