Melasma Isn't Just About Pigment: What New Dermatology Research Means for Treatment in Colorado Springs

Woman with clear, healthy glowing skin, calm and confident expression, Soluna Vee Spa Colorado Springs

This content is for educational purposes only and is not a substitute for medical advice.

If you have melasma, you have probably heard some version of the same explanation more times than you can count: too much sun, too much pigment, use a lightening cream and stay out of the light. For decades, that was the whole story clinicians and estheticians had to work with.

New dermatology research is changing that picture. A 2025 review published in the International Journal of Dermatology by Dr. Lara Ali and Professor Firas Al-Niaimi looked closely at what is actually happening inside melasma-affected skin, not just on the surface. Their conclusion echoes something we have believed at Soluna Vee Spa for a long time: melasma is far more complex than simply having too much pigment, and that complexity is exactly why it can feel so stubborn and so easy to trigger.

What the Research Found About Melasma Pigment

The review pulled together current literature on melasma and organized it into a few key areas of the skin: the epidermis, the basement membrane, and the dermis underneath. Here is what stood out.

Epidermal changes go beyond "extra pigment."

Melanin production increases in the epidermis, but the review points to oxidative stress as a major driver of that process. Reactive oxygen species generated by UV and visible light exposure trigger signaling pathways, including a protein called p53, that ramp up melanin synthesis. In plain terms, sun and light exposure do not just tan the skin, they set off a chain reaction inside skin cells that tells them to keep producing pigment.

The basement membrane, the structural layer between the epidermis and dermis, is often disrupted in melasma skin. 

When that barrier is compromised, melanin and melanocytes can migrate deeper into the dermis. This is part of why melasma can feel like it lives "under the surface" for some people, and why lightening the top layer of skin does not always resolve it.

The dermis itself is involved, not just a passive layer underneath. 

The review highlights several dermal changes seen in melasma-affected skin, including solar elastosis (sun-related breakdown of the skin's structural fibers), increased blood vessel activity, more active mast cells, and senescent fibroblasts, which are aging skin cells that release signals capable of stimulating nearby melanocytes to produce more pigment.

Visible light matters, not just UV. 

One of the more practical takeaways is the role of visible light, the kind that comes from sunlight even on cloudy days, as well as from screens and indoor lighting. Visible light appears to interact with photoreceptors in the skin in ways that can trigger melanin production and even influence the skin's circadian rhythm.

Hormones remain part of the picture. 

Hormonal fluctuations, whether from pregnancy, birth control, or other shifts, continue to be recognized as a contributing factor, working alongside the light and oxidative stress pathways described above.

A Closer Look at Each Layer

It helps to slow down and look at what is actually happening in each part of the skin, because each layer plays a different role in why melasma shows up and why it lingers.

In the epidermis, melanocytes are the pigment-producing cells, and in melasma-affected skin they become more active and more efficient at making melanin. The review points to oxidative stress, driven largely by UV and visible light exposure, as a key trigger. When reactive oxygen species build up faster than the skin can neutralize them, they activate internal signaling pathways that tell melanocytes to keep producing pigment even after the initial light exposure has passed. This is part of why melasma can seem to have a mind of its own, flaring weeks after a sunny vacation or a summer spent outdoors.

At the basement membrane, the thin structural layer separating the epidermis from the dermis, melasma-affected skin often shows visible disruption. Think of the basement membrane as a floor holding the epidermis in place above the dermis. When that floor develops gaps, pigment-carrying cells and melanin itself can slip down into the dermis below. Once pigment settles into the dermis, it becomes much harder to reach with surface-level treatments, which is part of why some melasma patterns respond more slowly than others.

In the dermis, several things are happening at once. Solar elastosis, the breakdown of collagen and elastin fibers from cumulative sun exposure, is common in melasma-affected skin and reflects years of UV damage to the skin's support structure. Blood vessel activity also increases in these areas, and researchers believe this heightened vascularity may itself help fuel melanocyte activity above it. Mast cells, a type of immune cell involved in inflammation, are found in greater numbers in melasma-affected skin as well, suggesting a low-grade inflammatory component that most people never associate with a "pigment problem." Finally, senescent fibroblasts, which are dermal cells that have stopped dividing due to age or UV stress, release signaling molecules that can prompt nearby melanocytes to ramp up pigment production even further.

Visible light deserves its own mention because it is so often overlooked. Unlike UV rays, visible light is present any time there is light in the room, including cloudy days, car windows, and the blue light from phone and computer screens. The review describes how visible light interacts with photoreceptors in the skin that can stimulate melanogenesis and disrupt the skin's natural circadian rhythm. This is one reason a sunscreen that only blocks UV rays can still leave melasma-prone skin vulnerable.

Hormonal influences, particularly estrogen and progesterone fluctuations from pregnancy, hormonal birth control, or other changes, continue to be recognized as contributing factors that interact with all of the mechanisms above rather than acting alone.

Why This Matters for How Melasma Is Approached

The biggest shift in this research is the idea that melasma behaves less like a simple pigment problem and more like a skin condition with multiple moving parts working together. That reframe matters because it explains two things clients ask about often.

Why melasma can be so persistent. If pigment production is being driven by oxidative stress, disrupted skin structure, and light exposure at the same time, addressing only one of those factors is unlikely to fully calm the pattern down.

Why a combination approach tends to perform better than a single product or single treatment. 

The review notes that understanding these overlapping mechanisms is helping guide treatment strategies that work on more than one front at once, rather than relying on a single lightening ingredient to do all the work.

This lines up closely with how melasma is approached at Soluna Vee Spa. Our protocols are never built around one product or one step. They combine tyrosinase inhibitors to help regulate melanin production, barrier-supportive ingredients to protect the skin's structure, and daily sun protection to reduce the light exposure that keeps the cycle going. Chemical exfoliation plays a role too, and we draw from several professional peel lines depending on what a client's skin needs, including Skin Script's TCA peel, Dermalogica's Pro peels, IMAGE Skincare's peels, and Melano Pro. Each is used thoughtfully and gradually as part of that bigger picture, not as a shortcut.

What You Can Actually Do With This Information

You do not need to memorize the biology to put this research to use. A few practical takeaways:

Daily broad-spectrum SPF is non-negotiable, and it needs to address visible light too. 

Traditional sunscreens are formulated primarily around UV protection. If visible light is part of what triggers melasma, tinted, mineral-based formulas that offer visible light coverage are worth prioritizing.

Consistency matters more than intensity. 

Because melasma involves multiple overlapping processes in the skin, a slow, steady, well-supported routine tends to outperform aggressive, one-time interventions that can actually aggravate the inflammation and vascular activity this research describes.

Support the skin barrier, not just the pigment. 

Since basement membrane changes are part of the picture, ingredients and treatments that support overall skin structure and calm inflammation play a real role, even though they are not "brightening" products in the traditional sense.

Melasma care is a partnership.

As an esthetician, my role is to support your skin through professional treatments, product selection, and consistent skincare habits. Diagnosis and any medical treatment decisions belong with your dermatologist, and the two of us can absolutely work together toward the same goal.

How This Connects to the Three Types of Melasma

If you have followed our blog before, you may remember our post on the three recognized types of melasma: epidermal, dermal, and mixed. This new research helps explain why that classification exists in the first place. Epidermal melasma reflects pigment concentrated closer to the surface, largely driven by the oxidative stress and melanocyte activity described above. Dermal melasma reflects pigment that has migrated deeper, often connected to basement membrane disruption. Mixed melasma, the most common presentation, involves both layers at once.

Understanding which layers are most involved is part of why a one-size-fits-all approach rarely works well for melasma. It is also why patience matters. Pigment sitting deeper in the dermis simply takes longer to influence than pigment concentrated in the epidermis, regardless of how consistent a routine is.

The Bigger Picture

Research like this validates something many people with melasma already sense: this is not a condition that responds to guesswork or a single miracle product. It is a layered process happening in the epidermis, the basement membrane, and the dermis all at once, influenced by light, hormones, and oxidative stress working together.

Understanding those layers does not make melasma simple to treat, but it does make it much easier to explain why patience, consistency, and a combination approach are not just marketing language. They reflect what is actually happening in the skin.

If you are working through melasma and want a plan built around your specific pattern, I would love to talk through it with you here in Colorado Springs.

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Soluna Vee Spa is a private, appointment-only studio in Colorado Springs — no crowded waiting rooms, no rushed treatments, just real attention to what your skin and body actually need.

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Reference: Ali L, Al Niaimi F. Pathogenesis of Melasma Explained. International Journal of Dermatology. 2025;64:1201-1212.