plaster (one's) hair down(redirected from plaster their hair down)
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plaster (one's) hair down
To cause one's hair to lie flat on one's head by using a large or excessive amount of water or hair products (such as oil, cream, gel, etc.). I don't understand why you plaster your hair down with gel like that—it looks so geeky! I get such bad bedhead that I have to plaster my hair down with water before I can even run a comb through it.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
plaster one's hair down
Fig. to use water, oil, or cream to dress the hair for combing. (The result looks plastered to the head.) Tony used some strange substance to plaster his hair down. He plastered down his hair with something that smells good.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.