Progressively worsening forehead/glabellar shadow for 2 years - what is this and how can it be treated? (Photos)

Question

I’ve developed a progressively worsening shadow in the center of my forehead/glabellar area (see photos). It’s much more noticeable in person than the photos show and is now visible through makeup. It’s become one of my biggest cosmetic concerns. Before suggesting Botox, I’d appreciate your thoughts on whether Botox could actually be contributing to this. I’ve been getting it for about 9 years, but only semi-regularly (generally no more than twice a year, often with more than 6 months between treatments). One experienced NYC injector thought it might be muscle atrophy. This doesn’t seem to be pigmentation. I’ve tried hydroquinone and multiple lightening agents without any improvement. About 2 years ago it started as faint shadows above both brows, but it has progressively darkened into this central forehead shadow. What do you think this most likely is? If it is Botox-related muscle atrophy, is it reversible? If not, what else could cause this? I’m willing to undergo treatment, but I understand glabellar filler carries a risk of vascular occlusion and even blindness, so I’m hesitant unless it’s truly the best option. Are there safer treatments (strategic Botox, fat grafting, biostimulatory fillers, laser, RF microneedling, etc.) that could help? Finally, what type of specialist should I see for this (cosmetic dermatologist, facial plastic surgeon, or oculoplastic surgeon)? Thank you- I would greatly appreciate any guidance. It has become very distressing.

Anna Chacon, MD, FAAD · Answer

I can understand why this has become frustrating, especially since you've noticed it progressing over time and it hasn't responded to skin-lightening treatments. Based on your description, this sounds less like a pigment problem and more like a contour issue.

One possibility is muscle volume loss (atrophy) from repeated Botox treatments. Although your treatment frequency doesn't sound excessive, some individuals are more prone to muscle thinning over time. When the frontalis or glabellar muscles lose volume, subtle depressions can develop, and overhead lighting can create shadows that look like discoloration even though the skin itself is normal.

That said, Botox is not the only possible explanation. Other possibilities include:

Natural age-related changes in the forehead fat pads
Loss or redistribution of subcutaneous fat
Changes in the underlying bone structure or facial volume
Less commonly, localized scarring or connective tissue changes

The fact that hydroquinone and other brightening agents had no effect supports the idea that this is likely not due to excess pigmentation.

As for reversibility, Botox-related muscle atrophy often improves gradually once treatments are stopped, but recovery varies from person to person. In some cases, muscle bulk returns over several months, while in others the improvement may be only partial.

Regarding treatment, your caution about glabellar filler is appropriate. The glabella is considered one of the highest-risk areas for filler because of its vascular anatomy. While filler can sometimes improve contour irregularities, it should only be considered after a careful evaluation and, if chosen, performed by someone with extensive experience in this specific area.

Other treatments may be more appropriate depending on the underlying cause. These can include:

Careful adjustment or discontinuation of Botox to allow muscle recovery if atrophy is suspected
Volume restoration with autologous fat grafting in selected patients
Biostimulatory treatments that encourage collagen production when appropriate
RF microneedling or laser treatments if there is also skin texture laxity, although these are unlikely to correct a true volume deficit on their own

In general, energy-based treatments improve skin quality more than they restore lost volume, so they may not fully address the shadow if contour loss is the primary issue.

For evaluation, I would recommend seeing a cosmetic dermatologist, facial plastic surgeon, or oculoplastic surgeon with extensive experience in facial anatomy and nonsurgical facial rejuvenation. The most important factor is finding someone who regularly evaluates complex facial contour changes rather than simply treating wrinkles.

The good news is that the pattern you've described is something that can often be analyzed by looking at the face dynamically—both at rest and with facial movement—to determine whether the shadow is coming from muscle, fat, skin, or a combination of these. Once that distinction is made, the treatment approach becomes much clearer.

Progressively worsening forehead/glabellar shadow for 2 years - what is this and how can it be treated? (Photos)

Answers (1)

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