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GlossaryYoung's modulus (Elastic modulus)

measures material stiffness by stress-to-strain ratio in elasticity

Young's modulus, also known as the elastic modulus, is a measure of the stiffness of a material. It quantifies how much a material will deform under a given amount of stress. Specifically, it is the ratio of tensile stress (force per unit area) to tensile strain (proportional deformation) in the linear elasticity region of the material. This property is crucial in fields like materials science and engineering, as it helps predict how materials will behave under different forces.

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learn Microneedling

technique to create small wounds in skin to activate collagen production and hair growth

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research Nanomechanical Characterization of Human Hair Using Nanoindentation and SEM

117 citations, August 2005 in “Ultramicroscopy”

Human hair's strength and flexibility vary by ethnicity, damage, and treatment.

research Age, Lifestyle, and Self-Perceptions of Hair: Is There an Association with Hair Diameter and Tensile Properties?

2 citations, August 2019 in “International Journal of Cosmetic Science”

Older age and certain lifestyles are linked to thinner, weaker hair, while how you see your hair relates to its thickness.

research Improving The Mechanical Properties Of Damaged Hair Using Low-Molecular Weight Hyaluronate

1 citations, November 2022 in “Molecules/Molecules online/Molecules annual”

Low-molecular weight hyaluronate can make damaged hair stronger.

Hyaluronic Acid: Elucidating Its Penetration Into and Effect on Hair Fibers Using Confocal Raman Spectroscopy and Biometric Techniques

research Hyaluronic Acid: Elucidating Its Penetration Into and Effect on Hair Fibers Using Confocal Raman Spectroscopy and Biometric Techniques

January 2024

Hyaluronic acid in shampoo penetrated hair well, reduced frizz, and improved hair strength and moisture.

research Optimizing Hyaluronic Acid: A Comprehensive Review of Rheological Insights for Clinical Practice

November 2023 in “Global journal of medical research”

Understanding the properties of hyaluronic acid helps improve its use in facial aging treatments.

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community MSM [Methylsulfonylmethane] ??

in Treatment 6 upvotes 1 year ago

Methylsulfonylmethane (MSM) is not a treatment for male pattern baldness but can accelerate hair growth and thicken miniaturized hairs, with the side effect of increased hair growth all over the body. The user asks others to share their experiences with MSM.

community Is 2-deoxy-D-ribose (2dDR) good for human hair?

in Research/Science 9 upvotes 8 months ago

Topical 2-deoxy-D-ribose (2dDR) regrows hair in mice almost as well as 2% Minoxidil. However, 2dDR may contribute to oxidative stress and hair loss due to the formation of advanced glycation end products (AGEs).

community Blocking DHT helps slow down aging or increases it?

in Research/Science 8 upvotes 2 years ago

Blocking DHT may slow down aging and improve skin, with users reporting positive effects from finasteride. Minoxidil and RU58841 are also mentioned as treatments.

community Fresh off the press: Dutasteride may cause chronic infertility

in Research/Science 639 upvotes 4 weeks ago

Dutasteride may cause chronic infertility by reducing semen volume and motility, with concerns about irreversible prostate fibrosis. Users consider switching to finasteride or using treatments like minoxidil and microneedling, weighing hair preservation against fertility.

community Where did this idea come from: dermastamp better than dermaroller?

in Microneedling 10 upvotes 1 month ago

Dermastamps are preferred over dermarollers for microneedling due to precision and reduced risk of scarring. Dermastamps allow for controlled, vertical needle entry, while dermarollers may cause more damage with sideways needle entry.

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