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Glossary Chemically Treated Hair

hair altered by chemical processes like coloring or straightening

Chemically Treated Hair refers to hair that has undergone chemical processes to alter its natural state. This can include treatments such as coloring, perming, relaxing, or straightening, which involve the use of various chemicals to change the hair's structure, texture, or color. These treatments can make hair more susceptible to damage and require specific care to maintain its health and appearance.

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Research

5 / 1000+ results

research Simultaneous RP-HPLC-DAD determination of dansyl amino acids in chemically treated human hair

4 citations , December 2018 in “Macedonian Journal of Chemistry and Chemical Engineering”

This study developed a reliable RP-HPLC-DAD method, finding that amino acid concentrations in bleached hair decrease with higher hydrogen peroxide levels, notably affecting cystine.

research Reinforcing chemically treated human hair with citric acid

January 2025 in “International Journal of Cosmetic Science”

This study found that citric acid treatment can significantly improve the structural integrity and mechanical properties of chemically treated hair, reducing damage by increasing keratin crosslinking density and decreasing crystallized calcium soaps, with varying effectiveness depending on the type of chemical treatment.

research Thermal Induced Changes in Cuticle and Cortex to Chemically Treated Hair

December 2025 in “Biopolymers”

This study found that chemically treated hair, particularly when subjected to both acid straightening and bleaching, experiences more significant structural damage when exposed to heat, highlighting key changes in both the internal and surface components of hair fibers.

research Scale Heights of Chemically Treated Wool and Hair Fibers

6 citations , March 1998 in “Textile Research Journal”

Chemical treatments can change the scale heights of wool and cashmere fibers, affecting their identification.

research Biomechanics of chemically treated hair for continuous 1D strands

February 2026

This study observed that treating human hair with NaOH led to partially removed cuticles, resulting in better fiber cohesion and mechanical properties similar to wool, unlike bleach or formic acid treatments, which weakened the fibers.

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Learn

1 / 6 results

learn Hair Transplant

When can I cut or style my hair after a hair transplant? You can cut or style your hair about 1 month after a hair transplant.

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Community Join

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community 2 % fucoidan significantly alleviated AGA symptoms, promoted hair growth, and increased hair density

21 upvotes 11 months ago

2% fucoidan alleviated AGA symptoms, promoted hair growth, and increased hair density in mice. Fucoidan is considered safe for humans as a supplement and topical skincare product, with potential therapeutic effects against AGA.

community Which 2026 hair‑loss treatments have the strongest evidence so far? (minoxidil/finasteride vs. clascoterone, PP405, Re:You’s NV‑623/624, AMP‑303, RU58841)

44 upvotes 3 months ago

Minoxidil and finasteride are the only FDA-approved treatments for androgenetic alopecia, while newer treatments like clascoterone, PP405, NV-623/624, AMP-303, and RU58841 are still experimental with varying levels of evidence. Clascoterone shows the most promise due to strong human data, while AMP-303 has notable early human trial results; RU58841 lacks human data and remains experimental.

community Noticing hair loss after eating certain foods

3 months ago

The user experiences hair loss and scalp reactions after eating certain non-organic foods, leading them to adopt an all-organic diet which has stabilized their hair condition. Suggestions include using liver-supporting herbs and considering gut health issues like histamine sensitivity.

community A Surprise Hair Loss Breakthrough: Sugar Gel Triggers Robust Regrowth : ScienceAlert

254 upvotes 1 year ago

A sugar gel has been found to aid hair regrowth, similar to minoxidil, and may improve blood supply to hair follicles. Some users report success with homemade versions, though side effects like dizziness have been noted.

community I am putting my hair loss treatment on hold until my mental health is better.

in Update 21 upvotes 2 years ago

OP is pausing hair loss treatments to focus on mental health due to anxiety and side effects from RU58841. They plan to try topical finasteride and minoxidil after recovering from pneumonia.

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Clinics

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Experts

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