Abstract
PURPOSE: The aim was to quantitatively evaluate the effectiveness of LED light therapy combined with photoacceptor substances having anti-acne properties in reducing the symptoms of acne vulgaris. PATIENTS AND METHODS: 15 subjects aged 20 to 24 who suffered from moderate or severe acne lesions. The treatments were performed using a LED device (465-880 nm). Blue light - 465 nm in combination with red light - 640 nm in pulsed mode and near-infrared light - 880 nm were used in the treatments. Each patient underwent 6 treatments, with intervals between treatments of 7 days. 3D images and biomechanical measurements were performed before first and fourth treatments and 6 weeks after the last. Additionally, photographic documentation was made 7 days after the 6th treatment. RESULTS: The series of treatments significantly influenced the clinical condition of the patients' skin. The treatments had a statistically significant impact on the intensity of erythema on the left and right cheeks. The hydration of the stratum corneum in all the examined areas of the face changed significantly after the treatments. Greater hydration was achieved six weeks after six treatments compared to the values obtained prior to treatment and after three treatments. The activity of sebaceous glands and, consequently, the amount of sebum on the epidermal surface in all the examined areas of the face changed significantly after the treatments. The treatments had a statistically significant impact on the volume of atrophic scars. CONCLUSION: Therapy combining LED light with photoacceptor substances is an effective method of reducing the symptoms of acne vulgaris. The treatments lead to a significant reduction in erythema, reduction in the volume of atrophic scars, improvement of skin hydration and regulation of sebum secretion. These effects can be identified quantitatively. Further studies are necessary to confirm the long-term effectiveness and safety of this method.