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

Treat pigment changes: Once eczema is under control, hyperpigmentation can be treated with products containing ingredients like topical retinoids and hydroquinone. —Health, 11 May 2025

Acids that treat wrinkles, hyperpigmentation, dark spots, and more. —Jamie Wilson, Glamour, 9 May 2025

As a beauty editor with skin prone to hyperpigmentation, tranexamic acid serums have been a saving grace. —Tracy Achonwa, Vogue, 8 May 2025

Meanwhile, Korean sunscreens use a second system that measures a product’s ability to defend against UVA rays (the type of sun rays that accelerate signs of aging, including hyperpigmentation, textural changes, and fine lines). —Adam Hurly, Robb Report, 6 May 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