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
While almost every skin care routine checks the same basic boxes—cleanse, treat, moisturize, repeat—mature skin care routines also typically target concerns like fine lines, loss of elasticity, and hyperpigmentation.
—Grace McCarty, Glamour, 25 Nov. 2025
Similar to the Neck Contour device, red light reduces inflammation and hyperpigmentation, while near-infrared targets on a deeper level.
—Conçetta Ciarlo, Vogue, 25 Nov. 2025
While hyaluronic acid certainly steals the show, the serum also features vitamin C to not only give your skin a boost of radiance, but also even out the complexion by minimizing dark spots and hyperpigmentation.
—Alicia Geigel, Southern Living, 21 Nov. 2025
The parent company of Il Makiage and SpoiledChild is debuting Methodiq, a telehealth platform with an initial focus on acne, hyperpigmentation and eczema.
—Kathryn Hopkins, Footwear News, 18 Nov. 2025
See All Example Sentences for hyperpigmentation
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Grace McCarty, Glamour, 25 Nov. 2025
Similar to the Neck Contour device, red light reduces inflammation and hyperpigmentation, while near-infrared targets on a deeper level.
—Conçetta Ciarlo, Vogue, 25 Nov. 2025
While hyaluronic acid certainly steals the show, the serum also features vitamin C to not only give your skin a boost of radiance, but also even out the complexion by minimizing dark spots and hyperpigmentation.
—Alicia Geigel, Southern Living, 21 Nov. 2025
The parent company of Il Makiage and SpoiledChild is debuting Methodiq, a telehealth platform with an initial focus on acne, hyperpigmentation and eczema.
—Kathryn Hopkins, Footwear News, 18 Nov. 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 28 Nov. 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?
Merriam-Webster unabridged
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