Figure 3.

Average clearances for each tattoo color treated with the 785 nm wavelength compared to an earlier study that using the same device but with the 1064 nm and 532 nm wavelengths. Clearance was determined by blinded reviewers following the 4th treatment using an identical scale in each study. Purple, blue, and green inks show the most benefit from 785 nm treatment, while black ink was cleared more effectively by 1064 nm and red and yellow by 532 nm, as expected (Error bars show sem).