Typically there is no blistering, but you could have had a reaction to taping or strapping which is commonly used with Ultrashape. Otherwise, the device can create some thermal effects. If you have some blistering it will likely resolve. I would alert my provider.
The treatment of UltraShape in an area with tattoo's is totally safe. The UltraShape does not see the surface at all unlike many other laser treatments, it is strictly looking for the fat cells that are in the dermis.
UltraShape is a nonsurgical fat-melting treatment with no downtime and no pain. It works by sending ultrasound energy (not thermal energy or heat, which is the technique used by many lasers) to targeted fat within the subcutaneous layer, which lies deep in the skin. There, this ultrasound energy...