Bioassay of Crude Drugs for Hair Growth Promoting Activity in Mice by a New Simple Method

    January 1980 in “ Planta Medica ”
    Shoichi Tanaka, Maria Lúcia Saito, Minoru Tabata
    Image of study
    TLDR Some natural extracts and one hair tonic can promote hair growth in mice.
    In 1980, Tanaka, Saito, and Tabata conducted a study to evaluate the hair growth promoting activity of four commercial hair tonics and 33 crude drugs using a new simple method they developed. They applied these substances to depilated areas on 5-week-old mice and measured the hair growth over time. The study found that alcoholic extracts from the bark of Cinchona succirubra, the root bark of Dictamnus dasycarpus, the seeds of Brassica juncea, and the roots of Sophora flavescens were effective in promoting hair growth. One of the commercial hair tonics also showed significant hair growth promotion after 6 days. The researchers concluded that certain crude drugs, particularly the Cinchona extract, have the potential to promote hair growth and prolong the hair growth period. They recommended their softening method for bioassay due to its simplicity and effectiveness.
    Discuss this study in the Community →

    Related Community Posts Join

    6 / 1000+ results

      community Hair Growth Progress Reversed. Help.

      in Treatments  128 upvotes 1 month ago
      The user experienced hair regrowth with oral Minoxidil, dandruff shampoo, topical Nanoxidil, and Revita Shampoo but lost progress after stopping Nanoxidil temporarily. They are now using topical Nanoxidil and oral dutasteride but are experiencing increased shedding and are unsure whether to continue or revert to their original regimen.
      Hair Growth or Loss Tracking Tool

      community Hair Growth or Loss Tracking Tool

      in Research  141 upvotes 3 months ago
      A user is developing a tool to track hair density, aiming to help those using treatments like minoxidil. They seek feedback on the tool's usefulness and are considering a low-cost model to cover expenses.

      community Hair growth progress from chewable fin/min

      in Progress Pictures  171 upvotes 3 months ago
      The user experienced significant hair growth using Hims chewable tablets containing finasteride and minoxidil but switched to a topical spray due to side effects from finasteride. The user reported improved side effects after switching to the topical form and noted continued hair growth progress.

      community Hair growth and natural remedies? Are they worth of it ..

      in Treatment  1 upvotes 10 months ago
      The user discusses using Minoxidil and plans to start Finasteride for genetic hair loss. They also mention natural remedies like gold shilajit, moringa powder, a seed mixture, and cardio exercise, emphasizing that while these can help, Minoxidil and Finasteride are necessary.

      community Hair Growth Journey: 10 months

      in Progress Pictures  252 upvotes 1 year ago
      A 31-year-old who experienced severe hair loss during medical school tried various treatments, including topical and oral finasteride and minoxidil, but stopped due to side effects. They restarted treatment 10 months ago with a regimen including topical finasteride, minoxidil, retinoic acid, hydrocortisone, oral minoxidil, and light therapy, emphasizing the importance of consistency and skincare.

      community Excessive hair growth from Minoxidil

      in Is this regrowth?  438 upvotes 3 weeks ago
      Minoxidil foam and oral finasteride resulted in significant hair regrowth, especially on the hairline, with no side effects from finasteride. The user applied Rogaine 5% for minoxidil.

    Similar Research

    5 / 1000+ results