In a placebo-controlled split-face trial, LED phototherapy reduced wrinkles by up to 36% and increased skin elasticity by up to 19%, with histology showing increased collagen and elastic fibers. The treatment was well tolerated.

A multicenter randomized controlled trial reported significant improvement in wrinkles and a softer, smoother, firmer feel after combined 633nm and 830nm LED treatment, with histology showing thicker collagen fibers.

Continuous 633nm LED irradiation increased type I procollagen and reduced MMP-1 and MMP-2 in skin fibroblasts. It also lowered inflammatory gene expression in keratinocytes and showed no harmful morphology changes in human skin explants.

Pulsed 660nm LED treatment increased type I procollagen, reduced MMP-1, and improved wrinkle depth and surface roughness in a split-face study. Most participants showed visible improvement after 12 treatments.

Red plus near-infrared LED treatment increased collagen- and elastin-related gene expression (LOXL1, ELN, COL1A1, COL3A1), raised procollagen type I and elastin protein levels, and increased ATP production in human dermal fibroblasts and skin explants.

This comparative study evaluated photorejuvenation from yellow and red LEDs, finding that red LED improved cellular activity and several skin-regeneration markers in both in vitro and in vivo settings.

A clinical review summarizing the established applications of low-level light therapy across dermatology and aesthetics, useful as background on the mechanisms and clinical use of photobiomodulation.

A systematic review assessing the efficacy and safety of LED phototherapy across dermatological indications — a strong source-of-record for the overall evidence base behind LED skin treatments.

A foundational review of LED phototherapy in dermatology, covering wavelengths, mechanisms, and clinical context for light-based skin treatment.

This trial found that self-administered periorbital microcurrent/EMS treatment, applied at home, was efficacious in significantly reducing moderate periorbital sinus pain for participants.

This pilot study reported edema reduction and symptom improvement in patients with lymphedema and/or lipedema of the lower limbs after microcurrent treatment combined with transdermal delivery of active principles.

A preclinical study showing that microcurrent stimulation can suppress inflammatory responses in macrophage models — mechanistic support for the anti-inflammatory effects attributed to bio-electric microcurrent.