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Glossary Cysteic 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

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research Evaluation of Cysteic Acid in Bleached Hair Using Infrared Spectroscopy

8 citations , January 2016 in “Journal of fiber science and technology”

This study found that cysteic acid generation during hair bleaching is diffusion-controlled, increasing with the square root of bleaching time, in both cuticles and cortex of human hair fibers.

research Metabolomic analysis of amino acids and lipids in human hair altered by dyeing, perming and bleaching

24 citations , April 2016 in “Experimental Dermatology”

This study found that chemical treatments like perming, dyeing, and bleaching significantly alter amino acids and lipids in human hair, which may impact hair strength and quality.

research The physical and chemical disruption of human hair after bleaching – studies by transmission electron microscopy and redox proteomics

30 citations , September 2018 in “International Journal of Cosmetic Science”

In this study, researchers observed that cosmetic peroxide bleaching causes oxidative damage and protein loss in human hair, not only affecting the cuticle but also deeper cortical structures, correlating with bleaching severity.

research Influence of Oxidative and/or Reductive Treatment on Human Hair (I): Analysis of Hair-Damage after Oxidative and/or Reductive Treatment

20 citations , January 2003 in “Journal of oleo science”

This study found that both everyday physical and environmental stresses, as well as chemical treatments, contributed to hair damage, with cuticle layers being more noticeably affected.

research Investigating the relationship between the hair fiber proteome and hair quality

2 citations , September 2004 in “International Journal of Cosmetic Science”

In this study, researchers linked hair composition and mechanical properties to perceived hair quality, suggesting that hair quality may be genetically determined.

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Community Join

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community Derma Harmony Sulfur/salicylic acid soap bar shampoo, it caused major hair loss shedding and oily scalp with acne breakout

2 upvotes 1 year ago

The Derma Harmony Sulfur/Salicylic acid soap bar shampoo caused significant hair shedding, oily scalp, and cystic acne. The user experienced better results with rosemary shampoo.

community for those whose hair loss started with accutane

in Chat 18 upvotes 1 year ago

Accutane use led to hair loss and seborrheic dermatitis for many, with treatments like dutasteride, minoxidil, and Nutrafol being used to manage symptoms. Some users reported improvement, while others experienced persistent issues or side effects from treatments like finasteride.

community Minox 3mg, Finasteride 1.2mg (6 month perfect adherence)

370 upvotes 5 months ago

Significant hair improvement was achieved using 3mg Minoxidil and 1.2mg Finasteride over six months, with no side effects, leading to reconsideration of a hair transplant. A detailed skincare routine, including tretinoin and SPF, also improved skin appearance.

community Finally Scalp Folliculitis-Free after 2 Decades of Suffering

64 upvotes 1 year 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 (17M) Hair loss and Cystic Acnes / Dutasteride

in Finasteride 109 upvotes 10 months ago

A 17-year-old is using Finasteride and Minoxidil for hair loss, experiencing hair shedding and cystic acne. They are considering Dutasteride for acne but are concerned about potential side effects on genital development.

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SMP Specialist
Hairo Fallas
Newark, NJ, United States

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