Backed by Science, Loved by Your Skin

  • Deep skin elasticity

    340% increase in deep skin elasticity compared to traditional LED masks.

  • Wrinkles and sagging

    Up to 270% greater reduction in wrinkles and sagging.

  • Skin density

    230% greater enhancement in skin density and pore improvement.

What makes us different

Pioneering Innovation, Exceptional Results

The FSLED mask (sold under the brand Caelumen) is the result of research led by Professor Keon Jae Lee at the Korea Advanced Institute of Science and Technology (KAIST), one of the world's leading research universities. Developed through a groundbreaking collaboration between KAIST's renowned materials science and biomedical engineering teams, this advanced mask leverages state-of-the-art Surface-Lighting microLED technology for unprecedented skin rejuvenation.

The rigorous clinical validation was overseen by distinguished dermatologist Dr. Beom Joon Kim from Chung-Ang University Hospital, ensuring meticulous standards of scientific accuracy and clinical safety. Under his expert guidance, the FSLED mask demonstrated significant anti-aging benefits, setting a new benchmark in home skincare solutions.

This unique synergy of world-class research, advanced engineering, and clinical dermatology expertise makes the FSLED mask a revolutionary addition to premium skincare.

Face-conforming technology

Miminizing reflection, we solve a longstanding problem of traditional LED masks.

Unlike traditional LED masks, the FSLED mask features an innovative 3D origami-inspired structure, meticulously engineered to closely conform to every contour of your face. This advanced design ensures ultra-close adherence to the skin, minimizing the gap between the microLEDs and your face.

Why is this crucial?
By significantly reducing the distance to your skin, the FSLED mask maximizes light penetration, allowing deeper delivery of therapeutic red light directly into your skin layers. Traditional rigid LED masks lose effectiveness due to reflections and energy dispersion caused by poor skin contact and gaps.

With FSLED’s precision-fit technology, you experience:

  • Deeper penetration—targeting skin cells directly at the mitochondrial level for superior collagen and elastin production.
  • Enhanced comfort—the flexible silicone mold adapts gently yet securely, making your skincare routine effortless and enjoyable.
  • Optimized safety—uniform distribution of light significantly reduces any risk of hotspots or uneven exposure, protecting your skin while delivering powerful rejuvenation.

Embrace the future of home skincare—experience unmatched results through technology that truly understands your face.

choose elegance, choose caelumen

Unrivaled Skin Rejuvenation Performance

The FSLED mask redefines home skincare with an unprecedented array of 3,770 microLEDs, meticulously positioned to deliver consistent, uniform illumination across your entire face—far surpassing traditional LED masks in both density and effectiveness.

Why choose FSLED?

  • Ultra-Dense LED Array:
    Over 3,770 microLEDs ensure thorough, even coverage, eliminating uneven treatment areas or missed spots common with conventional masks.
  • Rapid and Reliable Results:
    Clinically validated to deliver noticeable skin improvement in just weeks—firmer, smoother, and visibly younger skin from short, convenient sessions.
  • Superior Comfort & Durability:
    Crafted from premium, flexible materials tested extensively for durability and long-term reliability, ensuring comfortable use session after session.
  • Safe & Gentle Operation:
    Engineered for optimal temperature control, maintaining safe operation below 39°C, ensuring effective treatment without discomfort or risk of skin irritation.

Experience the unparalleled power of precision-engineered skincare—the FSLED mask is your pathway to visibly radiant, youthful skin.