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J Cutan Aesthet Surg. 2019 Apr-Jun;12(2):95-104. doi: 10.4103/JCAS.JCAS_72_19.

A Prospective Open-labeled Study of Tattoo Removal with Q-Switched Nd:YAG Laser Utilizing the R0 Technique and Correlation with Kirby-Desai Scale.

Author information

Skin and Laser Clinic, Hyderabad, Telangana, India.
Department of Dermatology, Ashwini Rural Medical College, Hospital and Research Centre, Solapur, India.
Alok Clinic, Panvel, Maharashtra, India.
Dr. J. W. Aurangabadkar New Skin Clinic, Hyderabad, Telangana, India.



The Q-switched Nd: YAG (QSNY) laser is considered the standard device of choice for laser tattoo removal. Newer concepts such as R0 , R20 methods aided in faster clearance of tattoos. The Kerby-Desai scale [KD scale] has been proposed to predict the approximate number of sessions needed for tattoo clearance.


To access the efficacy of R0 technique for tattoo removal in skin types IV to VITo evaluate the Kerby-Desai scale and its correlation to the number of sessions actually required for tattoo clearance.

Material and Methods:

Twenty-two patients with single colored amateur were treated using modified R0 technique and the number of sessions were corelated with Kirby Desai scale.


We found that R0 method require significantly less sessions than predicted by KD scale.


Tattoo removal with the R0 technique using PFD allows faster clearing of tattoos and significantly cuts down the total treatment duration needed for tattoo removal.


Kirby–Desai scale; Q-switched Nd-YAG laser; R0 method

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