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
My complexion had never looked more even, and the stubborn hyperpigmentation spots that usually overstayed their welcome had started to fade.
—Larry Stansbury, Essence, 7 Mar. 2025
In fact, one study found that a kojic acid serum also containing niacinamide and tranexamic acid led to significant improvement in hyperpigmentation and melasma after 12 weeks.
—Jenna Ryu, SELF, 4 Mar. 2025
Pinpointing skin irritants or allergens is often a huge hurdle for people with eczema, especially those with deeper complexions who have a higher risk of hyperpigmentation post-flare-up.
—Jihan Forbes, Allure, 28 Feb. 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.
—Jamie Johnson, Verywell Health, 25 Feb. 2025
See All Example Sentences for hyperpigmentation
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Larry Stansbury, Essence, 7 Mar. 2025
In fact, one study found that a kojic acid serum also containing niacinamide and tranexamic acid led to significant improvement in hyperpigmentation and melasma after 12 weeks.
—Jenna Ryu, SELF, 4 Mar. 2025
Pinpointing skin irritants or allergens is often a huge hurdle for people with eczema, especially those with deeper complexions who have a higher risk of hyperpigmentation post-flare-up.
—Jihan Forbes, Allure, 28 Feb. 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.
—Jamie Johnson, Verywell Health, 25 Feb. 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 19 Mar. 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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