Safety and Efficacy of High-Intensity Macrofocused Ultrasound for Solar Lentigo in Chinese Population

Exclusion Criteria

• •1. Women who are pregnant or breastfeeding, or who plan to become pregnant during the trial period;
• •2. those who are allergic to medical condensation gel;
• •3. those with photosensitive diseases, immune deficiencies, or those who are taking immunosuppressants;
• •4. those with scar physique;
• •5. those with inflammatory or infectious skin diseases;
• •6. those who have systemically used retinoic acid in the last six months or topically applied retinoic acid drugs in the last three months, or have a history of sun exposure in the four weeks prior to treatment;
• •7. those who have undergone high-intensity focused ultrasound treatment within the last six months;