I diligently take care of my skin every day, apply facial masks regularly, and even try various whitening products, but my skin remains dull and sallow. Why does my skin become more sallow, despite my efforts to whiten it?
Why does the skin become dull and yellow?
Under normal circumstances, the skin’s stratum corneum is renewed every 28 days. However, due to factors such as age, health, status, or the environment, this cycle can be prolonged, and old keratin cannot be shed in time, forming a rough ‘barrier’ on the skin’s surface, causing the skin to appear dull and lackluster.
Furthermore, poor blood circulation prevents the timely excretion of free radicals, carbon dioxide and other waste products produced by skin cell metabolism. Excessive free radicals can cause melanin to become overactive, leading to localised pigmentation and disrupting energy metabolism in skin cells. This further exacerbates keratin accumulation, and leaves the skin with a dull, sallow hue.
It can be seen that the translucency of the skin depends on sufficient blood oxygen supply and excretion of metabolic waste.
Can red light improve a dull skin tone?
Traditional methods for improving dull skin often involve a variety of approaches, including scientific skincare, lifestyle adjustments, and dietary optimisation. However, in recent years, red light therapy as a non-invasive physical beauty therapy, has gained acclaim for its safety, non-invasiveness, and painlessness.
A study published in ‘Laser Therapy’ by the research team of Tokuya OMI, a famous Japanese dermatology professor, showed that red light has no adverse effects on the morphology of human skin tissue, like photothermal or any other properties. It can increase the metabolic levels of endothelial cells and fibroblasts, enhance collagen synthesis and remodelling, help restore skin’s luster, improve dullness, and make the skin younger, firmer, and fuller.
Numerous authoritative documents also show that red light irradiation can dilate skin blood vessels, promote blood circulation, accelerate the delivery of oxygen and nutrients, help excrete metabolic waste, and, at the same time, provide sufficient energy for cell metabolism, enhance the activity of antioxidant enzymes, reduce oxidative damage, and reduce melanin production, thereby accelerating the skin regeneration process, prompting the timely shedding of waste keratin, and alleviating the problem of yellowing of the skin.
MERICAN whitening cabin, evens out and brightens skin tone
The MERICAN Collagen Whitening Cabin, based on red light therapy, breaks the limitations of traditional single-wavelength phototherapy by incorporating a multi-ratio composite light, developed jointly with a German team. This synergistic effect of multiple, precise wavelengths produces a photobiological effect at different skin depths and tissues. This effect, centred on mitochondrial activation, works through multiple mechanisms, including regulating energy metabolism, promoting collagen regeneration, and regulating pigment and antioxidant balance. It achieves multi-dimensional results from the inside out, including skin rejuvenation, improved skin translucency, and enhanced skin tone evenness.
To verify its effectiveness, the Merican team previously invited over 100 users of various ages and skin types to conduct a 28-day user experience. The vast majority of users reported that the Merican Collagen Whitening Cabin significantly improved skin’s whiteness, evenness, radiance and firmness, while also relieving fatigue and providing a sense of relaxation.
Real-life testing and effective verification:
No whitening cosmetics used.
This data is derived from internal testing at Merican Light Research Laboratory. Actual results may vary from person to person.
Finally, the problem of dark and yellow skin cannot be solved by just surface care. Only by allowing the healthy glow to radiate naturally from the bottom of the skin can you achieve the ideal state of lasting whiteness and translucence.

