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

Hale's skin journey goes beyond hyperpigmentation and breakouts. —Catherine Santino, People.com, 21 Apr. 2025

The Laser Pro uses near-infrared cold laser technology to boost collagen production to address wrinkles, cellulite, redness, scarring, hyperpigmentation, and post-surgical recovery. —Julian Chokkattu, Wired News, 19 Apr. 2025

And all of our experts stress the importance of using sunscreen to prevent hyperpigmentation. —Essence Gant, Allure, 16 Apr. 2025

These nourishing skin care products target multiple signs of maturity: thin and crepey skin, fine lines and wrinkles, and hyperpigmentation like sun spots. —Brigitt Earley, Glamour, 31 Mar. 2025

Word History

First Known Use

1866, in the meaning defined above

Rhymes for hyperpigmentation

• acclimatisation
• acclimatization
• acidification
• actualization
• annualization
• autocorrelation
• autoregulation
• beatification
• beneficiation
• biodegradation
• biotransformation
• bureaucratization

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