The evolution of quality-switched lasers.

Area of Science:

• Dermatology
• Laser Physics
• Aesthetic Medicine

Background:

• The efficacy of Quality-switched (QS) lasers for tattoo ink removal was noted in the 1960s.
• Selective photothermolysis in 1983 established QS lasers as the gold standard for cutaneous pigmented lesions and tattoos.
• Recent advancements have broadened QS laser applications beyond traditional uses.

Purpose of the Study:

• To review the evolution and expanded applications of Quality-switched (QS) lasers.
• To highlight the established role of QS lasers in dermatology and aesthetic medicine.
• To discuss future potential and technological refinements for QS laser systems.

Main Methods:

• Literature review of historical and recent studies on Quality-switched (QS) laser applications.
• Analysis of the scientific principles underlying QS laser efficacy, including selective photothermolysis.
• Examination of clinical outcomes and technological advancements in QS laser therapy.

Main Results:

• QS lasers are highly effective for tattoo removal and treating pigmented lesions.
• Recent decade shows dramatic expansion in QS laser uses, including nonablative skin rejuvenation.
• Successful application of QS lasers in treating onychomycosis (fungal nail infections) has been demonstrated.

Conclusions:

• Quality-switched (QS) lasers remain a cornerstone in dermatological and surgical laser applications.
• Continued innovation in QS laser technology promises further expansion of clinical uses.
• The versatility and efficacy of QS lasers ensure their integral role in modern laser surgery.