As the pigment becomes fixated within the skin it will go through changes in appearance. This occurs without the influence of undertones and outer tones. The wrapping of specialised immune cells around the pigment reducing light reflection causes this.
These cells are more concentrated post-procedure up to a few days after because they are trying to break the pigment down. As the swelling and the immune cells around the pigment disappear (around day 14-28) the remaining colour pigment will begin to bloom back.