Patent landscapes › Personal care & beauty

Is a hair straightener patented?

Short answer: specific designs of a hair straightener have been patented many times, but "a hair straightener" as a general idea is not what is protected. What matters is the exact combination of features in your version.

What our index shows
  • 157 US and WO patent publications since 2000 have a title matching “hair straighten” or a close variant (our index of 9.7 million patent families; one publication per family).
  • Among the 148 best keyword matches we examined, 57 were published in 2020 or later, and the earliest was published in 2000.
  • Most frequent assignees in those matches: CONAIR (5), MILLPLAN ELECTRIC APPLIANCE SHEN ZHEN CO LTD (4), SHENZHEN LADY MERRY TECH CO LTD (4), SHENZHEN FENDA TECH CO LTD (4).
  • Most common patent classes (CPC subclasses): A45D (120), A61Q (38), A61K (38), A46B (5).

Counts come from keyword matching on titles and abstracts, so they are indicative, not a legal count. Some matches are different products that share a word.

14 real patent publications related to a hair straightener

  1. Heating and blowing hair straightener US-2026007217-A1 2026 · YUELI GROUP CO LTD
    A heating and blowing hair straightener includes a first splint and a second splint. A front end of the first splint has a first straightening part, the second splint has a second straightening part corresponding to the first stra…
    View on Google Patents
  2. Active-heating hair straightener WO-2026178938-A1 2026 · MILLPLAN ELECTRIC APPLIANCE SHEN ZHEN CO LTD
    An active-heating hair straightener, comprising an upper clamping arm (10), a lower clamping arm (20), and a control circuit, wherein the upper clamping arm (10) is provided with an upper clamping plate (101), the lower clamping a…
    View on Google Patents
  3. Electric heating hair straightener having double heating modes WO-2025160957-A1 2025 · INTERTEC TECH LIMITED
    An electric heating hair straightener having double heating modes, comprising a main unit (A), wherein the main unit (A) is provided with a main clamping component (1) and an auxiliary clamping component (2) that can cooperate wit…
    View on Google Patents
  4. Steam hair straightener US-11882911-B2 2024 · ZHOU YUNGANG
    The invention discloses a steam hair straightener, comprising an upper handle and an upper cover forming the upper part, and a lower handle and a lower cover forming the lower part, wherein the upper handle and the upper cover are…
    View on Google Patents
  5. Wireless hair straightener with dual heater US-2023354978-A1 2023 · MANGOSLAB CO LTD
    A wireless hair straightener according to an embodiment of the present invention includes a battery charged by an external power supply, a first switch, a first heating resistor, and a second heating resistor which are sequentiall…
    View on Google Patents
  6. Vibrating hair straightener with integrated hair care US-2023025568-A1 2023 · SI LARBI YASMINA MME
    Electric hair straightener (100) comprising a straightening iron (10) formed by two articulated arms (11, 12) provided with heating plates (111, 121), a water reservoir (20) separate from the straightening iron and a hose (30) con…
    View on Google Patents
  7. Air-cooled hair straightener structure WO-2022160523-A1 2022 · DONGGUAN BIDISCO ELECTRIC CO LTD
    An air-cooled hair straightener structure, comprising a lower clamp plate assembly (1), an upper clamp plate assembly (2) and a control circuit board (3). The lower clamp plate assembly (1) comprises a lower clamp plate (100), a l…
    View on Google Patents
  8. Hair straightener US-10980326-B2 2021 · KONINKLIJKE PHILIPS NV
    A hair straightener (HS) comprises a heating unit (HU) for heating hair while exercising a pressure on the hair, a temperature sensor (TS) for measuring a temperature of the heated hair to obtain a measured temperature, and a pres…
    View on Google Patents
  9. Hair dressing device having air spraying, heating and hair straightener functions WO-2019208865-A1 2019 · BAE MYUNGSU
    The present invention relates to a hair dressing device having air spraying, heating and hair straightener functions, the device comprising: a first unit having a heating coil embedded therein; a first panel and a second panel ele…
    View on Google Patents
  10. Aluminum plate-coated multifunctional hair straightener US-10390596-B2 2019 · SHENZHEN LADY MERRY TECH CO LTD
    Disclosed is fabric taped aluminum plates multifunctional hair straightener, relating to hairdressing apparatus field. Lower battens are clamped on two sides of lower aluminum plate with lower fabric on surface and lower aluminum …
    View on Google Patents
  11. Hair straightener heating element US-2018303216-A1 2018 · QIU ZHIYONG
    A hair straightener heating element comprises: a base, a working plate, a heating sheet, a thermal insulation sheet, and a silica gel pad. The base is provided with an accommodation groove thereon. The silica gel pad is arranged i…
    View on Google Patents
  12. Hair straightener US-2015335121-A1 2015 · KONINKL PHILIPS NV
    The present invention relates to a hair straightener ( 10 ) comprising:—a first jaw ( 12 ) having a first plate ( 16 );—a second jaw ( 14 ) having a second plate ( 18 );—a hinge ( 20 ) coupled to the first and second jaw ( 12, 14 …
    View on Google Patents
  13. Heating plate for a hair straightener US-2011132391-A1 2011 · DICKSON INDUSTRIAL CO LTD
    A heating plate for a hair straightener including a substantially planar hair engagement surface and at least a first and a second edge defining a periphery of a first end of the hair engagement surface, wherein at least one of th…
    View on Google Patents
  14. Heating plate for hair straightening iron and its manufacturing process US-7800020-B2 2010 · CEVA CARLOS JOSE
    A heating plate for a hair straightening iron and a method for its manufacture are provided. The heating plate consists of a case comprising two laminates made of insulating ceramic material; one of them holds a band made of elect…
    View on Google Patents

What this means for your idea

Because patents cover specific combinations of features, the useful question is not “has a hair straightener been patented?” but “has my combination of features been described before?” Beauty and personal-care patents focus on application mechanisms, heads/bristles, and heating or vibration features.

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Guides that help with this

First-look landscape. Not exhaustive. Not legal advice. This page lists keyword-matched publications from a limited database; it does not say whether any product is or isn't covered by a patent, whether a patent is still in force, or whether your idea is patentable. Consult a registered patent attorney or agent.