A study from the "Journal of Chinese Dermatovenerology showed that 4%5- aminolevulinic acid photodynamic therapy (ALA-PDT) in the treatment
A study from the "Journal of Chinese Dermatovenerology showed that 4%5- aminolevulinic acid photodynamic therapy (ALA-PDT) in the treatment of moderate to severe acne, and can reduce sebum secretion, skin barrier function is very small, the impact on skin color is temporary.
No.1 Hospital of Peking University of 20 patients with moderate to severe acne face, the use of ALA-PDT for the treatment of 3 times, after the end of treatment continued to be followed up for 8 weeks. Inflammatory and non inflammatory skin lesions were evaluated separately. The physiological indexes of skin were measured by noninvasive test instrument.
After the 3 treatment, inflammatory and non inflammatory lesions were significantly reduced in the patients. After the treatment, the sebum secretion of the patients was decreased, and the physiological indexes related to skin barrier function, such as water content, pH value and TEWL value, were improved. The L value and a value of the skin color of the patients changed during the treatment period, but returned to the level before treatment at 1 to 2 months.