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    Did you mean Hair Types?
    Glossary Hair Types

    categorizes hair by curl pattern, thickness, and structure

    Hair types, also known as hair textures or hair classifications, refer to the categorization of hair based on its curl pattern, thickness, and overall structure. The most common system classifies hair into four main types: Type 1 (straight), Type 2 (wavy), Type 3 (curly), and Type 4 (coily or kinky), with further subcategories (A, B, C) within each type to describe variations in curl tightness and texture. Understanding hair types is crucial for selecting appropriate hair care products and treatments.

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    Research 10 of 1000+

    1. Hair Follicle Dermal Stem Cells Regenerate the Dermal Sheath, Repopulate the Dermal Papilla, and Modulate Hair Type Developmental Cell · 2014 · 184 citations
    2. Hair follicle differentiation: expression, structure and evolutionary conservation of the hair type II keratin intermediate filament gene family Development · 1992 · 65 citations
    3. Identification of the Key Genes Associated with Different Hair Types in the Inner Mongolia Cashmere Goat Animals · 2022 · 30 citations
    4. NF-κB Participates in Mouse Hair Cycle Control and Plays Distinct Roles in the Various Pelage Hair Follicle Types 2017 · 23 citations
    5. How different is human hair? A critical appraisal of the reported differences in global hair fibre characteristics and properties towards defining a more relevant framework for hair type classification International Journal of Cosmetic Science · 2022 · 8 citations
    6. Proteomic analysis identifies differentially expressed proteins participating in forming Type III brush hair in Yangtze River Delta white goat Genetics and molecular research · 2015 · 8 citations
    7. 52711 Benefit of a Selenium Disulfide-based shampoo in subjects of any phototype and hair type presenting with dandruff Journal of the American Academy of Dermatology · 2024
    8. Whole transcriptome sequencing of different hair types in inner Mongolian cashmere goats BMC Genomics · 2026
    9. Novel Type I Hair Keratins K39 and K40 Are the Last to be Expressed in Differentiation of the Hair: Completion of the Human Hair Keratin Catalog Journal of Investigative Dermatology · 2007 · 70 citations
    10. Hair Removal With the 3-msec Alexandrite Laser in Patients With Skin Types IV-VI: Efficacy, Safety, and the Role of Topical Corticosteroids in Preventing Side Effects Journal of Drugs in Dermatology · 2007 · 21 citations
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    Community 10 of 1000+

    1. what type of hair brush do diffused thinners use Reddit · 2 Sept 2026
    2. 5ar Type I in the frontal hair follicles - Dutasteride Reddit · 30 Apr 2024
    3. What percentage of men these days do you guys think are on some type of hair loss treatment? Reddit · 13 Jun 2024
    4. Did anybody use beta sisterol for hair loss? I saw in many articles in the internet that said that beta sisterol blocks dht by inhibiting 5a reductase type 2 enzyme and some reviews of people who said that it worked better than saw palmetto in terms of stoping hair loss and helping prostate. Reddit · 11 May 2023
    5. What's the best type of rosemary essential oil for stimulating hair growth? Cineole, camphor, or verbenone? Reddit · 3 Oct 2022
    6. New Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness - Paper entitled "Hair Follicle Dermal Stem Cells Regenerate the Dermal Sheath, Repopulate the Dermal Papilla, and Modulate Hair Type" published journal Developmental Cell Reddit · 24 Dec 2014
    7. Are there high quality realistic toupees for my hair type? What is a good price range for something satisfactory? Reddit · 23 Sept 2026
    8. Why did this recent research paper from professor Tsuji lab in Japan largely go unnoticed by this sub? Isn't this discovery huge? (hair cloning) Reddit · 11 May 2026
    9. Fun thought experiment about halting hair loss permamently Reddit · 6 May 2024
    10. I have not seen a single person who claims dutasteride destroyed their hair post a picture of the before/after Reddit · 30 Apr 2024
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    Learn 10 of 61

    1. Dutasteride 5-alpha reductase inhibitor that blocks both enzyme types, a stronger DHT blocker than finasteride
    2. GHK-Cu Copper peptide used in skin and hair cosmetics
    3. Metformin Diabetes drug that lowers blood sugar
    4. Finasteride Popular 5-alpha reductase inhibitor that lowers DHT, taken as a pill or used topically
    5. Exosomes Tiny cell-derived particles offered by clinics as an injectable treatment
    6. Cyproterone a synthetic anti-androgen and weak progestogen that inhibits DHT binding to androgen receptor
    7. Mesotherapy Injections of drug or vitamin mixtures into the scalp
    8. PP405 mitochondrial pyruvate carrier (MPC) inhibitor by Pelage in early trials
    9. Bicalutamide Nonsteroidal anti-androgen, originally a prostate cancer drug
    10. Microneedling Technique that makes tiny punctures in the scalp with fine needles
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