What does lightener mean?
A lightener is most commonly a chemical preparation used to make hair lighter in color. It works by opening the hair cuticle and removing or reducing pigment, often with the help of a developer; the product is not itself a source of light, despite the name. In a broader, less frequent sense, a lightener is any person, device, or substance that makes something brighter, lighter in weight, or easier to manage. For example, a managing editor may be described as a lightener of a complicated manuscript, while hair-care products are explicitly called hair lighteners. The word is understandable in British and American English, although it is especially prominent in American beauty and hair-product marketing. It is usually a count noun and takes the regular plural lighteners.
nounA person or thing that makes something lighter, brighter, or less heavy. In hair care, it usually refers to a chemical product used to lighten hair.
- A chemical product or preparation used to make hair lighter in color.
- A person, device, substance, or other thing that makes something lighter, brighter, or less heavy.
"She applied the lightener carefully because it could damage her hair if left on too long."
"The salon recommended a violet lightener for her hair."
"The editor acted as a lightener, making the long report easier to read."
The regular plural is lighteners. The word is often used attributively, as in hair lightener or lightener cream.
"The two lighteners were stored separately on the salon shelf."
A hair lightener does not add light; it removes or dilutes pigment to make hair appear brighter.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does lightener come from?
Lightener is an English agent noun formed from light, lighten, and the suffix -er, meaning a person or thing that performs an action. The underlying word light has Old English roots in both the notions of illumination and lack of weight, while the formation lighten combines the base with the suffix -en. The specialized hair-care sense developed from the older general idea of making something lighter.
Related word forms
How lightener is actually used
In hair care, lightener is a common count noun and may sound more informal or commercial than the fuller phrase bleaching product. Its exact meaning can depend on context, since it can refer to the preparation, its active ingredient, or the act of lightening hair.
Easily confused with lightener
A lightener makes something lighter or brighter, whereas a lighter is a small device used to ignite a flame, or the comparative form of light.
Lightener is a noun naming a person or product that lightens; lightening is a gerund or participle referring to the act of becoming or making lighter.