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GlossaryTensile Strength

maximum stress a material endures before breaking when stretched

Tensile strength, also known as ultimate tensile strength (UTS), is the maximum amount of stress a material can withstand while being stretched or pulled before breaking. In the context of hair, it refers to the force required to break a strand of hair when it is pulled from both ends. This property is crucial for understanding the durability and resilience of hair fibers, which can be affected by factors such as chemical treatments, environmental exposure, and overall hair health.

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research Penetration of Different Molecular Weight Hydrolysed Keratins into Hair Fibres and Their Effects on the Physical Properties of Textured Hair

7 citations, October 2020 in “International Journal of Cosmetic Science”

Different sizes of keratin peptides can strengthen hair, with smaller ones possibly increasing volume and larger ones repairing damage.

research Tensile Properties of Twisted Hair Fibers

1 citations, March 2005 in “International Journal of Cosmetic Science”

Twisting hair weakens it, but strength can be recovered at low twist levels.

How Different Is Human Hair? A Critical Appraisal of Global Hair Fibre Characteristics and Properties Towards Defining a More Relevant Framework for Hair Type Classification

research How Different Is Human Hair? A Critical Appraisal of Global Hair Fibre Characteristics and Properties Towards Defining a More Relevant Framework for Hair Type Classification

8 citations, November 2022 in “International Journal of Cosmetic Science”

Human hair varies widely and should be classified by curl type rather than race.

research A Clinical Trial to Investigate the Effect of Cynatine HNS on Hair and Nail Parameters

11 citations, January 2014 in “The Scientific World Journal”

Cynatine HNS improves hair and nail quality in 90 days.

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.

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

Fender121 9 upvotes 8 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 0.5mg Dutasteride promotes more “regrowth” than 5mg oral Minoxidil

Villanellat in Research/Science 117 upvotes 1 year ago

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

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

Snoo-60969 in Research/Science 70 upvotes 3 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.