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Glossary Mechanical Strength

ability to resist breaking or deforming under force

Mechanical strength refers to the ability of a material to withstand forces or loads without breaking or deforming. In the context of hair, it indicates how well hair fibers can resist damage from physical actions like brushing, pulling, or styling. For professionals, it encompasses properties such as tensile strength, elasticity, and resilience, which are critical for understanding hair health and the effectiveness of hair care products.

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Research

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research Photoageing of Hair Fiber and Photoprotection

18 citations , March 2009 in “Skin pharmacology and physiology”

This study found that sunlight exposure causes significant structural and chemical damage to hair, including cuticle loss, cortex damage, and discoloration, with water playing a major role in discoloration of brown hair.

research Molecular elements of the regulatory control of keratin filament modulator AHF/trichohyalin in the hair follicle

7 citations , July 2008 in “Experimental Dermatology”

This study identified molecular elements controlling the expression and stabilization of THH protein in hair follicle cells, revealing key mechanisms that support hair shaft development in mice.

research New insights from data analysis of 12 global clinical studies on hair shedding

August 2026 in “International Journal of Cosmetic Science”

This study found that shed hairs from the root significantly outnumber broken hairs during hair fall, particularly in Chinese male and female participants, with shedding predominantly occurring during washing.

research 285 A new scalp treatment for anti-ageing hair

September 2017 in “Journal of Investigative Dermatology”

In this study, the authors found that a botanical extract with anti-inflammatory and anti-oxidative properties stabilized hair loss and preserved natural hair pigmentation and strength over six months.

research Structure and Mechanical Properties of Human Trichocyte Keratin Intermediate Filament Protein

51 citations , September 2012 in “Biomacromolecules”

This study found that disulfide bonds in keratin increase its strength and toughness, with some loss of α-helical structure under load, highlighting their role in trichocyte α-keratin's mechanical properties.

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Community Join

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community 18m, already balding. Is a hair system the way to go? I don’t have the strength to go bald this young

in Hair Systems 148 upvotes 8 months ago

An 18-year-old with early hair loss is advised to consider minoxidil and finasteride, with a doctor's consultation recommended. Alternatives like a hair system or shaving are suggested due to potential medication side effects and lifelong commitment.

community Solving Hair Loss with Research at MIT

in Research/Science 595 upvotes 1 year ago

Hair loss treatments like minoxidil, finasteride, TDM-105795, and PP405. MIT is hosting a hackathon to find innovative hair loss solutions.

community Story time! The Great Unbalding (PP405)

230 upvotes 11 months ago

PP405 is a promising new hair loss treatment that may reactivate dormant hair follicles without side effects. It could surpass traditional treatments like minoxidil and finasteride if successful in further trials.

community The truth about Dutasteride (w/ sources)

in Finasteride/Dutasteride 52 upvotes 3 years ago

The effectiveness of Dutasteride compared to Finasteride in treating hair loss, with evidence given such as studies and experiences, as well as discussion around whether one should switch from Finasteride to Dutasteride. There is also a discussion on post-Dutasteride syndrome.

community Magnesium oil worked wonders for me, until it stopped working

4 upvotes 1 year ago

A user experienced significant hair improvement using magnesium oil after stopping finasteride due to side effects, but the effects of magnesium diminished over time. They are seeking alternative treatments for hair loss without using finasteride.

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