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    Glossary Hair Casts

    tiny, cylindrical structures encircling hair shafts, often mistaken for lice eggs

    Hair casts, also known as pseudonits, are tiny, cylindrical, white or yellowish structures that encircle the hair shaft. They can be mistaken for lice eggs (nits) but are actually composed of keratin and other debris. Hair casts can be easily moved along the hair shaft and are often associated with conditions like seborrheic dermatitis or psoriasis.

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    1. Castor oil Thick plant oil used in hair care
    2. Alopecia Areata autoimmune disorder causing patchy hair loss
    3. Adenosine Molecule the body uses for energy, used as a cosmetic hair-lotion ingredient
    4. Biotin B vitamin, often sold as a hair supplement
    5. Minoxidil Vasodilator used on the scalp and, at low doses, as a tablet