Split-tattoo Study Comparing the Safety and Efficacy of 670nm Picosecond Laser Versus 755 nm for Tattoo Removal

Inclusion Criteria: * Female or Male, 18 to 65 years of age (inclusive). * Fitzpatrick Skin Type I - VI. * Target tattoo contains single or multi-color ink. * Subject must be able to read, understand and sign the Informed Consent Form. * Must be willing and able to adhere to the treatment and follow-up schedule and post-treatment care instructions. * Wiling to cover tattoos with a bandage or clothing; and/or have very limited sun exposure and use an approved sunscreen of SPF 50 or higher on the treated area starting 2 to 4 weeks before the treatment and/or every day for the duration of the study, including the follow-up period. * Willing to have digital photographs taken of the treatment area and agree to use of photographs for presentation, educational or marketing purposes. * Agree to not undergo any other procedure(s) for tattoo removal during the study (as applicable). * Post-menopausal or surgically sterilized, or using a medically acceptable form of birth control at least 3 months prior to enrollment and during the entire course of the study, and no plans to become pregnant for the duration of the study. Exclusion Criteria: * Participation in a clinical trial of a drug or another device in the target area during the study. * Target tattoo contains only black ink. * History of allergic reaction to pigments following tattooing. * History of allergy to local anesthetics. * History of allergy to topical antibiotics. * History of malignant tumors in the target area. * Skin abnormalities in the target area, e.g., cuts, scrapes, wounds, scars, large moles. * Pregnant and/or breastfeeding. * Having an infection, dermatitis or a rash in the treatment area. * Significant concurrent illness, such as diabetes mellitus or cardiovascular disease, e.g., uncontrolled hypertension. * Suffering from coagulation disorders or taking prescription anticoagulation medications. * History of keloid scarring, hypertrophic scarring or of abnormal wound healing. * History of immunosuppression/immune deficiency disorders or currently using immunosuppressive medications. * History of vitiligo, eczema, or psoriasis. * History of connective tissue disease, such as systemic lupus erythematosus or scleroderma. * History of seizure disorders due to light. * Any use of medication that is known to increase sensitivity to light according to Investigator's discretion. * History of disease stimulated by heat, such as recurrent herpes simplex and/or herpes zoster (shingles) in the treatment area, unless treatment is conducted following a prophylactic regimen * History of radiation to the treatment area or undergoing systemic chemotherapy for the treatment of cancer. * History of pigmentary disorders, particularly tendency for hyper- or hypo-pigmentation. * Systemic use of corticosteroid or isotretinoin within 6 months of study participation. * Anytime in life, having have used gold therapy (gold salts) for disorders such as rheumatologic disease or lupus. * Excessively tanned in areas to be treated or unable/unlikely to refrain from tanning during the study. * Current smoker or history of smoking within 6 months of study participation. * As per the Investigator's discretion, any physical or mental condition which might make it unsafe for the subject to participate in this study.