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research Cyclic Combing of Untreated and Bleached Human Hair: Analysis of the Time-Dependent Breakage of Hair Through Recording the Formation of Fiber Fragments

September 2025 in “International Journal of Cosmetic Science”

Friction causes hair breakage during combing, and fragment count predicts hair strength.

Effect of Ethnicity and Treatments on In Situ Tensile Response and Morphological Changes of Human Hair Characterized by Atomic Force Microscopy

research Effect of Ethnicity and Treatments on In Situ Tensile Response and Morphological Changes of Human Hair Characterized by Atomic Force Microscopy

42 citations , April 2008 in “Acta materialia”

Different ethnicities and treatments affect human hair strength and structure.

research Understanding Curly Hair Mechanics: Fiber Strength

8 citations , July 2019 in “The journal of investigative dermatology/Journal of investigative dermatology”

Curly hair is mechanically different from straight hair and may need new testing methods.

research A Single Arm, Exploratory and Pilot Study to Evaluate the Efficacy of a Multi-Component Water-Based Herbal Supplement in Hair Growth, Density, Follicle Strength and Hair Fall in Healthy Male and Female Subjects

September 2021 in “IP Indian Journal of Clinical and Experimental Dermatology”

The herbal supplement improved hair growth, density, and strength without side effects.

research Single Hair Fiber Assessment Techniques to Discriminate Between Mineral Oil and Coconut Oil Effect on Hair Physical Properties

3 citations , September 2020 in “Journal of cosmetic dermatology”

Coconut oil makes hair stronger and more flexible than mineral oil.

View more "tensile fatigue failure" in research →

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community Considering giving a laser comb a shot. Here’s a summary of my research on the subject.

9 upvotes 9 years ago

Considering adding Low Level Laser Therapy (LLLT) to a hair loss prevention regimen; discussing the effectiveness of LLLT, and evaluating double-blind random-controlled trials that have been conducted on laser combs.

community Can hard water affect your scalp/hair?

in Chat 15 upvotes 4 years ago

Hard water may contribute to an itchy, dry scalp and hair issues, but it doesn't affect genetic hair loss. Some users suggest using distilled water or a water softener to alleviate symptoms.

community 0.5mg Dutasteride promotes more “regrowth” than 5mg oral Minoxidil

in Research/Science 117 upvotes 2 years ago

Dutasteride promotes more hair regrowth than Minoxidil. Users discuss combining treatments for better results and share personal experiences with side effects.

community LLLT seems like it's at least a solid maintenance tool. Can also provide ok regrowth in AA and MPB. - Pubmed

16 upvotes 8 years ago

Low-Level Laser Therapy (LLLT) is seen as a safe and effective method for maintaining hair and promoting regrowth in androgenetic alopecia (AGA) and male pattern baldness (MPB), with devices like the HairMax LaserComb® and iRestore helmet being popular. Some users and professionals are skeptical about its long-term effectiveness and cost.

community Why I really believe the tension theory is the cause of MPB

in Research/Science 70 upvotes 4 years ago

The conversation discusses the tension theory as a cause of male pattern baldness (MPB), suggesting that scalp tension and reduced subcutaneous fat layer contribute to hair loss. Treatments mentioned include Minoxidil, finasteride, microneedling, scalp massages, and Botox.