Red light therapy refers to the use of specific wavelengths of visible red light, typically LED light in the range of 630–670 nm, along with near-infrared light at around 800–880 nm, to stimulate biological activity in skin cells without damaging or ablating the skin surface. It can be delivered through LED devices or low-level laser systems, both categorized under photobiomodulation.
When delivered through laser technology, it is commonly referred to as Low-Level Laser Therapy (LLLT). This method uses coherent and highly focused light, allowing more precise targeting of tissue. In contrast, LED-based devices emit non-coherent light that disperses more broadly across the skin surface.
Once red or near-infrared light penetrates the skin, intracellular chromophores—particularly cytochrome c oxidase within mitochondria—absorb light energy. This process enhances ATP synthesis, which in turn supports fibroblast activation, increases collagen and elastin production, improves microcirculation, and helps modulate inflammatory responses.
How Red Light Makes Skin Smoother
Red light therapy works at the cellular level, not the structural level. It stimulates collagen and elastin in the dermis, thickening the skin and improving its bounce-back ability. This helps the face look smoother and more even, which is particularly relevant for areas where skin thinning makes tear troughs and nasolabial folds appear more visible.
JOVS 4D Laser Mask Clinical Evidence (SGS Report)
The JOVS 4D Laser Mask has been tested in a human efficacy evaluation by SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch. In this study, 32 Asian adult female subjects (aged 34–45) used the mask for 28 days under normal conditions, and multiple skin parameters were measured before and after use.
Key Results After 28 Days
After 28 days of regular use, the mask demonstrated visible improvements that are directly relevant to the appearance of tear troughs and nasolabial folds, mainly through skin thickening, firmness improvement, and texture refinement rather than structural lifting.
In the SGS evaluation with 32 participants, results showed anti-wrinkle, firming, and soothing effects. Skin texture became smoother, roughness decreased, and pores appeared more refined, contributing to a more even mid-face surface. These improvements help reduce the contrast shadows that make tear troughs and nasolabial folds more noticeable.
Skin elasticity, firmness, thickness, and density all showed measurable improvement, which supports better skin support and surface resilience in areas prone to folding and creasing.
On pigmentation and tone, the mask helped reduce melanin levels on the cheeks and under-eye area, lowered erythema around the eye region, and improved the appearance of dark circles. This contributed to a lighter under-eye appearance and a better overall dark circle grade, which is especially relevant for tear trough visibility.
Importantly, no adverse reactions were observed in any of the 32 participants, confirming good safety for daily facial use.
Data is sourced from a third-party, real-subject clinical test report by SGS (Report No.: GZCPCHE23000171-01_EN). The findings are based on a comparison of 32 subjects after 28 days of product use versus their initial baseline. Individual results may vary.
For more information, you can refer to JOVS Laser Technology.
Final Words
Long-term use of red light therapy can help sustain mitochondrial activity within skin cells, supporting ongoing ATP production and maintaining fibroblast function. Over time, this contributes to continuous collagen and elastin remodeling, improved circulation, and better regulation of inflammation.
With consistent use, the skin gradually becomes denser, firmer, and more elastic. These improvements enhance overall mid-face support and, from a biological standpoint, may help reduce and delay the visible formation of tear troughs and nasolabial folds.
In the long run, regular red light therapy use supports stronger skin resilience, helping preserve a smoother, more lifted facial appearance as natural aging-related structural changes continue.
