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research Effect of Heat Treatment on Human Hair Keratin Film

2 citations , September 2013 in “日本香粧品学会誌”

The study investigated the effects of heat treatment on human hair keratin films and hair samples, focusing on color change, morphology, protein solubility, and oxidative proteins. It was found that keratin films changed color from opaque white to yellow/light brown at temperatures above 170°C, with little morphological change observed even at 200°C. Protein solubility decreased with increased heating time and temperature, showing a linear relationship between solubilized proteins and temperatures from 110 to 160°C. The keratin films exhibited more pronounced changes compared to hair samples, with increased carbonylated proteins at 120–180°C, suggesting that heat promotes protein oxidation and the formation of a "Stable Structure." The study concluded that keratin films could be used to quantitatively evaluate hair thermal damage.

research Carbonylation of Hair Proteins: A Robust Biomarker of Molecular and Structural Oxidative Damage in Hair Fibers

February 2025 in “International Journal of Cosmetic Science”

Protein carbonylation is a sensitive marker for oxidative damage in hair, especially from light exposure.

research Investigation of the Crosstalk Between Proteasome Function and Nucleotide Excision Repair Mechanism During Aging

August 2015 in “Free Radical Biology and Medicine”

The document concludes that the discussed biological mechanisms and potential therapies are not related to hair loss or hair growth.

research A Dietary Supplement Improves Age-Related Dermatological Changes: Observational, Anecdotal, Spontaneous Study

1 citations , May 2017 in “Asian journal of medical sciences”

The dietary supplement significantly improved skin, nails, and hair in older adults.

research Protein Carbonylation As A Reliable Read-Out Of Urban Pollution Damage/Protection Of Hair Fibers

September 2022 in “Cosmetics”

View more "carbonylated proteins" in research →

Community Join

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community Nandrolone Replacement Therapy

in Treatment 44 upvotes 2 years ago

A user discusses starting nandrolone replacement therapy to stop hair loss and improve hair health, noting its benefits over finasteride. They report halted hair loss, improved skin, increased muscle, and a calm mood after three weeks.

community PP405 Identity Research

in Research 292 upvotes 2 months ago

PP405 is a potential hair loss treatment that inhibits mitochondrial pyruvate carriers, increasing lactate dehydrogenase activity and stimulating hair follicle stem cells. In a phase 1 trial, 31% of participants showed over 20% hair density increase with PP405 treatment.

community Then vs Now, fin saved my life

in Progress Pictures 2 years ago

A user's experience of using finasteride to treat hair loss, including details about shedding and side effects; their regimen; and the advice given by others about diet, sport, smoking, and topical treatments.

community PSA: Get your Vitamin D levels checked!

in Treatment 115 upvotes 2 years ago

A user improved their hair health by taking 50,000 IU of vitamin D3 weekly due to a deficiency. Others discussed the potential link between vitamin D and hair growth, with some sharing similar experiences and emphasizing the importance of monitoring vitamin D levels and consulting with doctors.