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    Glossary Hair Medulla

    innermost layer of a hair strand, often containing air spaces

    The hair medulla is the innermost layer of a hair strand, often composed of soft, spongy cells that may contain air spaces. While its exact function is not fully understood, it is thought to contribute to the hair's overall strength and may play a role in the hair's ability to insulate. Not all hair types have a medulla, and its presence can vary between individuals and even among different hairs on the same person.

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      research A New Approach to Obtain Attractive Hair: Hair Medulla Care

      2 citations , March 2023 in “Journal of Society of Cosmetic Chemists of Japan”
      This study found that the "Hair Medulla Care" treatment allows various substances to penetrate hair more effectively, suggesting potential applications for enhancing hair coloring, care, and perming processes.

      research Hair Medulla and its variations in Doshaja Prakruti – An observational study

      September 2025 in “International Journal of Ayurvedic Medicine”
      This study observed distinct variations in hair medulla patterns among people with different Ayurvedic Prakruti types, linking stronger hair integrity to Kapha-dominant types and weaker, fragmented medullae to Vata and Pitta-dominant types, potentially aiding in Dosha-specific hair care and assessment.

      research Bubble hair

      16 citations , October 1992 in “Journal of cutaneous pathology”
      This study examined two cases of bubble hair deformity using light and electron microscopy, suggesting that trauma to the hair shaft may contribute to this condition.
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