This study aimed to evaluate efficacy and safety of 675-nm laser for dorsal hand rejuvenation in Thai patients. Twenty-six subjects aged 50 to 65 years diagnosed with wrinkle and solar lentigines on both dorsums of hands were included and treated with RedTouch for 3 times every 4 weeks. Then, they were follow up at 3 and 6 months after the final treatment. The measurement of 5-point Global Aesthetic Improvement Scale scores by physicians and subjects were conducted. Moreover, pigmentation level, wrinkle and texture were also recored using Antera. Elasticity was measured using Cutometer.

RedTouch parameter included Moveo, power 5 W, Energy/DOT 500 mJ/DOT, then Standard, power 4 W, spacing 2000 μm, 1 pass per side.

Inclusion Criteria:

• Subjects diagnosed with wrinkles and solar lentigines on both dorsum of hands

Exclusion Criteria:

• Pregnant or lactation
• Sugjects with a history of allergy to near-infrared wavelength or photosensitizing agents
• Subjects who have been treated with any kind of energy-based device on both dorsum of hands 6 months prior to the inclusion
• Subjects who have been injected with filler, or platelet-rich plasma on both dorsum of hands on their faces 6 months prior to the inclusion
• Active skin infections
• History of hypertrophic scars or keloids