Changes in skin color are one of the most common concerns patients mention. While many people are familiar with hyperpigmentation, hypopigmentation can be more challenging to understand and treat.
In this blog, Aesthetic Solutions cosmetic dermatologist Dr. Kamrani will cover what causes hypopigmentation and the available treatment options.
What is Hypopigmentation?
Hypopigmentation simply means a loss or reduction of melanin, the natural pigment that gives your skin its color. It shows up as patches or spots that look lighter than the skin around them. There are many possible causes. Some of the most common are changes that follow inflammation or injury, such as after eczema, acne, or burns, along with vitiligo (an autoimmune condition), pityriasis alba, tinea versicolor (a common yeast overgrowth), and idiopathic guttate hypomelanosis, the small white spots many people notice on their arms and legs as they age. Scars are one of the most common triggers of all: after a burn, for example, thickened (hypertrophic) scars develop in an estimated 30% to 70% of patients, and these scars are frequently left lighter or unevenly colored, especially in deeper skin tones.
The issue can be from one of the three reasons: the skin is making less melanin, it is not transferring that pigment into skin cells properly, or the pigment-producing cells themselves have been damaged. Concerns like these are among the most common reasons people see a dermatologist.
How is Hypopigmentation different from Hyperpigmentation?
The two are essentially opposites. Hyperpigmentation is too much melanin, which creates darker areas such as melasma, sun spots, and the lingering marks left behind after a breakout. Hypopigmentation is too little melanin, which leaves lighter areas. The gap can be striking: one study that measured pigment directly in scars found that hyperpigmented scars held roughly four times the melanin of normal skin, while hypopigmented scars held only about half.
What surprises many patients is that the very same trigger, like a burn or a stubborn breakout, can lead to either darker or lighter skin depending on your skin type, how deep the injury went, and the kind of inflammation involved.
Why Hypopigmentation Can Be Difficult to Treat
Hypopigmentation is challenging for a simple reason: it is far easier to turn pigment production down than to turn it back up. When we treat dark spots, we are slowing cells that are already overactive. With light spots, we are asking quiet or injured cells to wake up and start working again, and in some cases those pigment cells have been permanently lost, which makes a complete return of color unlikely.
There is an encouraging detail, though. Research shows that many hypopigmented scars still contain the same number of pigment cells as the normal skin around them, which tells us the cells are often present but simply not doing their job. Switching them back on is exactly what newer treatments are designed to do.
Treatment Options for Hypopigmentation
Because no single treatment works for everyone, we build a plan around what caused the pigment loss and how your skin tends to respond. Lasers are an important tool that can be used to treat hypopigmentation. Fractional laser resurfacing, in both its ablative and non-ablative forms, can help remodel and re-pigment stubborn white scars.
The most exciting development pairs a fractional laser with a topical medication called bimatoprost, the same active ingredient found in the eyelash serum Latisse. The laser creates thousands of microscopic channels that let the medication reach deeper, where it prompts existing pigment cells to make and share more melanin. In a randomized, blinded, head-to-head study, this laser plus bimatoprost combination produced greater than 50% improvement in 76% of patients, clearly outperforming laser treatment alone. For very stable, localized spots that have not responded to anything else, surgically transplanting healthy pigment cells is another option if lasers do not work.
Can Hypopigmentation Be Prevented?
In many cases it can be, at least in part, and prevention comes down to protecting your pigment cells and calming inflammation early. Daily broad-spectrum sunscreen is the single most valuable habit, both for preventing sun-related white spots and for shielding your skin before and after any procedure. The procedures themselves are low-risk in experienced hands, too: in one large review of fractional laser sessions for burn scars, a side effect of any kind occurred in fewer than 2% of treatments. Treating flare-ups of eczema, psoriasis, and acne promptly reduces the inflammation that can reduce skin color.
There is reassuring news here too. Most cases of hypopigmentation that follow inflammation fade on their own within weeks to months once the underlying cause is brought under control. The main exception is when pigment cells have been completely destroyed, in which case the change can become permanent. That is exactly why seeing a dermatologist earlier on is important as the earlier the treatment, the more likely it will work.
Timeline: Setting Realistic Expectations
Repigmentation is a gradual process, and a bit of patience is part of the treatment itself. Laser-based treatments are typically done as a series, often around 4 to 6 sessions spaced 4 to 8 weeks apart, with results continuing to develop for months afterward. Some approaches also benefit from occasional maintenance, since the improvement from treatments like the excimer laser can fade over time without upkeep.
It also helps to define success honestly. A flawless, perfect color match is not always achievable, and the realistic goal is usually significant improvement rather than perfection. The results can still be substantial: in a study using a fractional CO2 laser combined with a prostaglandin medication for hypopigmented burn scars, 85.7% of patients in the combination group saw 50 to 74% improvement after six monthly sessions. At your visit, we will map out what is realistic for your specific skin and situation.
The Bottom Line
When it comes to hypopigmentation, there is no one-size-fits-all solution. The right treatment approach depends on what caused the pigment change, how long it has been present, and how your skin responds. To start your treatment journey in the Raleigh, Durham, Chapel Hill area, contact our office for more information.
