As the founder of Skin Botanist, I’ve always been a bit of a purist when it comes to skincare. I believe in nature, science, and sustainability—and I’m cautious about jumping on trends that promise miracle results. So when LED masks started popping up everywhere, I was sceptical. Could light therapy really fade pigmentation, sun spots, or signs of ageing? Or was this just another skincare fad?
Curiosity got the better of me. I dug deep into the research, spoke to skin therapists, reviewed clinical studies—and yes, I gave it a proper test run myself. What I discovered surprised me: LED light therapy, especially red and yellow light, has real potential when used consistently and in combination with the right skincare. Here’s what you need to know if you’re considering it for pigmentation, sun damage or age spots.
So, what exactly is LED light therapy, and how does it work?
Originally developed by NASA to speed up wound healing in space, LED (light-emitting diode) therapy uses specific wavelengths of light to stimulate biological processes within the skin. Each light colour penetrates at different depths and triggers targeted responses—like boosting collagen, calming inflammation, or fading discolouration. Unlike lasers or harsh treatments, LED light is completely non-invasive and gentle on the skin, making it suitable for all skin types. When used consistently, it can support your skin’s natural regeneration cycle and visibly improve tone, texture, and clarity—without downtime or irritation.
Understanding red and yellow LED light for pigmentation
When treating pigmentation and age-related dark spots, both red and yellow LED light offer unique benefits. The key lies in how they work on different layers of the skin—and how they can be used together for transformative results.
Red light therapy (630–660nm): deep repair and rejuvenation
Best for boosting collagen, reducing inflammation, and supporting skin regeneration.
Red light penetrates deeper into the skin, stimulating the production of collagen and elastin—two proteins essential for firm, healthy skin. It also supports wound healing and reduces inflammation, which is important for preventing post-inflammatory pigmentation.
While red light doesn’t target melanin directly, it does support overall skin renewal. By speeding up cell turnover and healing UV damage, it can help fade pigmentation gradually and improve tone and texture over time.
Why it works:
- Increases collagen and elastin production
- Speeds up cell turnover
- Calms inflamed or reactive skin
- Improves resilience against future UV damage
Yellow light therapy (570–590nm): surface brightening and tone correction
Best for reducing sun spots, melasma, redness, and dullness.
Yellow light targets the epidermis (the skin’s surface) and works to break down excess melanin—the pigment that causes dark spots and uneven tone. It also stimulates lymphatic flow, which helps detoxify the skin and boost circulation, resulting in a clearer, more luminous complexion.
Yellow light is particularly effective for treating superficial pigmentation caused by sun damage or hormonal shifts (like melasma), making it ideal if you’re dealing with stubborn brown patches or blotchy skin tone.
Why it works:
- Helps reduce melanin accumulation
- Calms redness and irritation
- Evens out tone and boosts radiance
- Supports skin detoxification
So, which light is better?
The truth is, you don’t have to choose. Red and yellow light work best in tandem.
Yellow light handles the pigment directly—breaking it down, calming inflammation, and restoring a more even tone.
Red light supports the deeper layers—stimulating collagen and healing the skin from within.
Used together or in rotation (for example, alternating days), they offer a powerful, non-invasive way to tackle pigmentation naturally and effectively.
My personal verdict
After using a high-quality LED mask for 6 weeks, paired with a gentle natural routine focused on hydration and barrier repair, I noticed a visible reduction in sun spots and an overall glow I hadn’t seen in a while. The results weren’t overnight, but they were real—and most importantly, they came without harsh chemicals, downtime, or compromise.
How to get the most from LED therapy for pigmentation
To see lasting results, consistency is key. Here’s how to maximise your results:
- Use 3–5 times a week for at least 6–8 weeks
- Apply a hydrating or brightening serum (like vitamin C or liquorice root) before use
- Always follow with SPF during the day—light therapy can make skin more sun-sensitive
- Avoid aggressive exfoliants or chemical peels while using LED regularly
- Drink plenty of water and support your skin from the inside out
LED therapy isn’t just a gimmick—it’s a powerful tool when used with intention and the right routine. At Skin Botanist, we’re all about gentle but effective skincare that respects your skin’s natural rhythms. If you’re looking to treat pigmentation or restore your skin’s radiance in a non-invasive, sustainable way, red and yellow light therapy might just be worth your time.
Choosing a safe LED mask: what to look for
Not all LED devices are created equal. If you’re investing in light therapy, it's essential to choose a high-quality mask that’s safe, effective, and delivers the right wavelengths. Here’s what to keep in mind:
- Check the wavelength range: Look for red light around 630–660nm and yellow light around 570–590nm for best results on pigmentation.
- Opt for medical-grade or clinically tested devices: These ensure consistent light output and safety, especially for regular home use.
- Avoid cheap, unregulated devices: If it doesn’t list wavelengths or comes without safety certifications (like CE or FDA clearance), it’s best to steer clear.
- Look for eye protection: Built-in eye shields or goggles are important, especially if the mask sits close to the eyes.
- Comfort and fit matter: A well-designed mask will sit snugly but comfortably on your face, allowing even light distribution.
If you're unsure where to start, it's worth asking your dermal therapist or skin professional for recommendations.
Disclaimer
While LED light therapy is generally considered safe and effective for most skin types, results can vary depending on skin condition, device quality, and consistency of use. This content is intended for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. If you have a skin condition or are pregnant, breastfeeding, or using prescription-strength actives, consult with your GP or skin specialist before starting LED therapy.