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

The presence of nickel can cause a skin rash that leads to hyperpigmentation, or darkening, of the skin.

—Jenyne M. Raines

hyperpigmented

ˌhī-pər-ˈpig-mən-təd 

-ˌmen-

adjective

hyperpigmented skin

Examples of hyperpigmentation in a Sentence

Recent Examples on the Web

The standout ingredient, 3-O ethyl ascorbic acid, is the most effective, stabilized form of vitamin C that penetrates deeply to reduce hyperpigmentation, fine lines, and wrinkles while delivering a noticeable plumping effect. —Michelle Rostamian, Allure, 30 Dec. 2024

These botanicals, while new to mainstream beauty, have long been revered for diminishing hyperpigmentation, evening texture, and nourishing the skin’s barrier. —Jessica Fields, Essence, 20 Dec. 2024

The product is meant to reduce hyperpigmentation and brighten skin. —Lindzi Scharf, Los Angeles Times, 4 Dec. 2024

Serum Is Mind-Blowing Your skin can look brighter, more even-toned, and youthful after just a few uses of this Topicals Serum which is specially formulated to target spots, discoloration, and hyperpigmentation. —Hyphensocial Contributors, Rolling Stone, 27 Nov. 2024

Word History

First Known Use

1866, in the meaning defined above

Medical 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.

hyperpigmented

-ˈpig-mənt-əd, -ˌment- 

adjective

hyperpigmented skin