hyperpigmentation
noun
hy·per·pig·men·ta·tion
ˌhī-pər-ˌpig-mən-ˈtā-shən 
-ˌmen-
: excess pigmentation in a bodily part or tissue (such as the skin)
Vitamin C has been reported to inhibit the production of melanin, the stuff that produces not only a tan but also freckles and hyperpigmentation.—
Anne Weintraub
Anne WeintraubThe presence of nickel can cause a skin rash that leads to hyperpigmentation, or darkening, of the skin.—Jenyne M. Raines
Jenyne M. RainesExamples of hyperpigmentation in a Sentence
Recent Examples on the Web
In terms of benefits, exosomes assist with collagen regeneration, reducing acne scars, wound healing, hyperpigmentation, and hair follicle stimulation.
—Essence, 29 Sep. 2025
Retinal is a more potent version of vitamin A and is more effective with smoothing fine lines and hyperpigmentation.
—Gina Vaynshteyn, StyleCaster, 24 Sep. 2025
Protects Against Environmental Factors Chronic sun exposure causes signs of aging, such as redness, color changes (hyperpigmentation), changes in thickness, inflammation, and other signs of damage.
—Carrie Madormo, Verywell Health, 16 Sep. 2025
That’s not the case with this gentle toner from Renee Rouleau, which calls on antioxidant elderberry to neutralize free radicals (unstable molecules that can damage cells and contribute to aging), fight hyperpigmentation, and help promote collagen production.
—Esme Benjamin, PEOPLE, 4 Sep. 2025
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Essence, 29 Sep. 2025
Retinal is a more potent version of vitamin A and is more effective with smoothing fine lines and hyperpigmentation.
—Gina Vaynshteyn, StyleCaster, 24 Sep. 2025
Protects Against Environmental Factors Chronic sun exposure causes signs of aging, such as redness, color changes (hyperpigmentation), changes in thickness, inflammation, and other signs of damage.
—Carrie Madormo, Verywell Health, 16 Sep. 2025
That’s not the case with this gentle toner from Renee Rouleau, which calls on antioxidant elderberry to neutralize free radicals (unstable molecules that can damage cells and contribute to aging), fight hyperpigmentation, and help promote collagen production.
—Esme Benjamin, PEOPLE, 4 Sep. 2025
See All Example Sentences for hyperpigmentation
Cite this Entry
“Hyperpigmentation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperpigmentation. Accessed 1 Oct. 2025.
Copy CitationMedical Definition
hyperpigmentation
noun
hy·per·pig·men·ta·tion
-ˌpig-mən-ˈtā-shən, -ˌmen-
: excess pigmentation in a body part or tissue (as the skin)
hyperpigmentation of deep inflammatory acne lesions—Elizabeth A. Abel et al.
Elizabeth A. Abel et al.Love words? Need even more definitions?
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