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GlossaryCysteic Acid

compound formed when cysteine oxidizes, indicating hair damage

Cysteic acid is a compound that forms when the amino acid cysteine undergoes oxidation. In the context of hair, it can result from chemical treatments like bleaching or perming, which can damage the hair's protein structure. For professionals, it's important to note that the presence of cysteic acid indicates oxidative stress and potential weakening of the hair fiber.

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research Distribution and Localization of Hydrophobic and Ionic Chemical Groups at the Surface of Bleached Human Hair Fibers

36 citations, October 2014 in “Langmuir”

Bleaching hair removes its protective top layer and exposes more hydrophilic groups, changing its chemical surface and affecting how it interacts with products.

research Effect of Disulfide Bonds in Human Hair Fibers on the Melting Behavior of Their Crystalline Structure

March 2010 in “International Journal of Cosmetic Science”

Disulfide bonds affect the melting behavior of hair's crystalline structure, but hair retains some stability even after these bonds are broken.

research Effect of Disulfide Bonds in Human Hair Fibers on the Melting Behavior of Their Crystalline Structure

1 citations, January 2009 in “Journal of S C C J”

Changing disulfide bonds in human hair affects its melting behavior and thermal stability.

Exploring the Effects of Wetting and Free Fatty Acid Deposition on a Hair Fiber Surface Model Incorporating Keratin Associated Protein 5-1

research Exploring the Effects of Wetting and Free Fatty Acid Deposition on a Hair Fiber Surface Model Incorporating Keratin Associated Protein 5-1

November 2022

Water and fatty acids affect hair's surface differently based on hair damage, and models can help understand hair-cosmetic interactions.

research Mechanical and Biological Properties of Keratose Biomaterials

140 citations, August 2011 in “Biomaterials”

Keratose, derived from human hair, is a non-toxic biomaterial good for tissue regeneration and integrates well with body tissues.

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community Finally Scalp Folliculitis-Free after 2 Decades of Suffering

in Treatment 59 upvotes 2 weeks ago

A 37-year-old male resolved scalp folliculitis by adopting a low-histamine diet and taking Vitamin A, Zinc, and Fish Oil, leading to better skin health and thicker hair. He warns about the potential toxicity of excessive Vitamin A intake.

community Fighting Hair loss AND Grey Hair

in Treatment 18 upvotes 2 years ago

The user is treating hair loss with topical Minoxidil, Finasteride, RU58841, microneedling, and Ketoconazole. For grey hair, they use L-Cysteine, L-Methionine, and PABA, and have noticed some re-pigmentation.

community Alfatradiol Experience (2 months)

in Treatment 12 upvotes 3 years ago

User experienced side effects from oral finasteride and tried topical Alfatradiol for hair loss. Alfatradiol provided maintenance without significant regrowth, and user suggests it as an alternative for those struggling with finasteride side effects.

community Anything you use without scientific backing, just trusting your gut?

in Research/Science 13 upvotes 1 year ago

The conversation discusses using peppermint oil for hair loss, with one user applying it undiluted to the scalp and another combining it with finasteride and microneedling. Some believe in its effectiveness despite limited scientific evidence, and also mention rosemary oil as potentially beneficial.

community Help : How to mix Tretinoin with Minoxidil?

in Research/Science 1 upvotes 4 days ago

The user is seeking advice on mixing 5% Minoxidil with 0.025% Tretinoin for hair loss treatment, as they cannot find a suitable product in India and are considering making it themselves. They express concerns about mixing ratios and stability, while others suggest applying them separately or mixing them with other ingredients like finasteride and RU58841.

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