Everything You Need to Know About Tattoo Removal. https://www.healthline.com/health/tattoo-removal-how#removal-creams. Accessed September 27, 2019.
Tattoo removal. https://www.mayoclinic.org/tests-procedures/tattoo-removal/about/pac-20395105. Accessed September 27, 2019.
PICO Laser Tattoo Removal Technology, Myth or Reality? https://www.newhopelaserskincare.com/blog/pico-laser-tattoo-removal-technology-myth-or-reality. Accessed September 27, 2019.
Laser Tattoo Removal. https://www.ncbi.nlm.nih.gov/pubmed/28723036. Accessed September 27, 2019.
Effects of picosecond laser on the multi-colored tattoo removal using Hartley guinea pig: A preliminary study. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6126847/. Accessed September 27, 2019.
談刺青去除（長庚醫院）https://www1.cgmh.org.tw/cosmetic/contents/medi114.htm Accessed September 10, 2021.