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    Did you mean Prostaglandin D2?
    GlossaryProstaglandin D2

    lipid compound linked to hair loss and inflammation

    Prostaglandin D2 (PGD2) is a type of prostaglandin, which are lipid compounds that have hormone-like effects in the body. PGD2 is involved in various physiological processes, including the regulation of inflammation and allergic responses. Notably, it has been linked to hair growth regulation, where elevated levels of PGD2 in the scalp have been associated with hair loss conditions such as androgenetic alopecia.

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      popular antihistamine showing promise for hair loss as an anti-inflammatory and prostaglandin inhibitor

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      glaucoma medication with hair follicle stimulant effects

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      a synthetic anti-androgen and weak progestogen that inhibits DHT binding to androgen receptor

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      community Zyrtec (Cetirizine) antihistamine for hair growth compared to Minoxidil NIH study

      in Minoxidil  37 upvotes 3 years ago
      The conversation discusses the potential of topical cetirizine (Zyrtec) for hair growth in comparison to minoxidil, noting cetirizine's ability to reduce prostaglandin D2, which inhibits hair growth. Users share mixed experiences with cetirizine for allergies and scalp health, and there's a mention of the risk of dementia with long-term antihistamine use.

      community Need supplemental products in addition to oral minoxidil and oral dutasteride

      in Product  1 upvotes 6 months ago
      The user has been using oral minoxidil and dutasteride for hair loss without success and is considering adding topical 17α-estradiol, Pyrilutamide, Clascoterone, or cetirizine. They have confirmed low serum DHT levels and are exploring additional treatments due to genetic sensitivity to DHT and prostaglandin D2.

      community You will lose hair if your prostaglandins aren't in balance

      in Research/Science  56 upvotes 1 year ago
      Prostaglandin balance affects hair loss, particularly in conditions like Lichen Planopilaris, where an imbalance can lead to hair follicle damage. Treatments mentioned include prostaglandin analogs and Pioglitazone HCL, with a focus on maintaining prostaglandin equilibrium for potential hair regrowth.

      community Doubts about castor oil

       4 upvotes 7 years ago
      Castor oil's effectiveness for hair growth is debated, with concerns about its impact on skin health and prostaglandin levels. Some users suggest combining it with coconut oil and using it alongside finasteride for better results, while others recommend sticking to proven synthetic treatments.

      community Stumbled on some research

      in Research/Science  7 upvotes 5 years ago
      Elevated PGD2 levels in bald scalp tissue may contribute to hair loss, and treatments like castor oil, finasteride, and minoxidil are discussed as potential solutions. Some users explore alternatives like oral castor oil and cetirizine for those who cannot use finasteride.