Phototherapy — the therapeutic use of light — has evolved from basic UV treatments to sophisticated LED, IPL, and laser systems. This guide covers the key phototherapy modalities used in modern aesthetic medicine.
How Light Therapy Works
Different wavelengths of light interact with chromophores (light-absorbing molecules) in skin tissue, triggering specific biological responses. The three primary chromophores are melanin, haemoglobin, and water — each absorbing different wavelengths.
LED Phototherapy
LED (light-emitting diode) therapy uses narrow-band light at specific wavelengths:
- Red (630–660nm): Stimulates fibroblast activity, collagen production, and cellular energy (ATP). Anti-ageing and wound healing.
- Blue (415–455nm): Kills P. acnes bacteria via porphyrin activation. Acne treatment.
- Near-infrared (830nm): Deep tissue penetration for pain relief and inflammation reduction.
- Yellow (590nm): Reduces redness, stimulates lymphatic drainage. Rosacea and sensitive skin.
IPL (Intense Pulsed Light)
IPL uses broad-spectrum light (400–1200nm) with filters to target specific chromophores. Applications include: hair reduction (melanin), vascular lesions (haemoglobin), pigmentation (melanin), and photo-rejuvenation. Multiple sessions (4–8) are required for optimal results.
Combining Phototherapy with Active Ingredients
LED therapy combined with exosomes or mesotherapy enhances treatment outcomes significantly. The light energy increases cellular receptivity to active ingredients, amplifying their regenerative effects. Skymedic’s photobiodynamic therapy range is specifically formulated for use alongside light-based treatments.
Explore our photobiodynamic therapy products for professional light-based treatments.
