Blue and red light combination LED phototherapy for acne vulgaris in patients with skin phototype IV.

Abstract in brief

• This study explored the use of combined blue (415 nm) and red (633 nm) LED light therapy to treat mild to moderate facial acne, focusing on its safety and effectiveness for skin types IVBR.
• The treatment, applied twice a week over four weeks, resulted in significant improvement in acne lesions, with reductions of about 34% in non-inflammatory and nearly 78% in inflammatory lesions, along with decreased melanin levels and enhanced skin tone and texture.
• Overall, blue and red LED phototherapy was found to be a safe, nonpainful, and effective option for managing papulopustular acne, showing notable clinical and instrumental skin improvements.]