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Research

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research Use of a modified hair strand test to assess the antifungal activity kinetics of dog hair after a 2% climbazole shampoo application

2 citations , April 2016 in “Veterinary dermatology”

This study found that a 2% climbazole shampoo had significant residual antifungal activity on beagle hair shafts, which increased after subsequent use of a physiological shampoo.

research Cases: Severe burns to scalp caused by hair bleaching

July 2007 in “Clinical Risk”

A woman got severe scalp burns from a salon's improper hair bleaching treatment.

research Chemical Safety and Technical Decision-Making in Hair Procedures: A Professional and Scientific Perspective

February 2025 in “Zenodo (CERN European Organization for Nuclear Research)”

This analysis highlighted the importance of integrating scientific literacy into chemical hair procedures, emphasizing that understanding the interaction of chemical agents with hair's biological structure and making evidence-based decisions can improve safety, predictability, and professional standards in the beauty industry.

research Chemical Safety and Technical Decision-Making in Hair Procedures: A Professional and Scientific Perspective

February 2025 in “Zenodo (CERN European Organization for Nuclear Research)”

This review highlights the complex role of scientific knowledge and professional expertise in safely performing chemical hair procedures, emphasizing the importance of education to prevent potential adverse effects like hair damage and scalp irritation.

research In Vitro Methodologies to Evaluate the Effects of Hair Care Products on Hair Fiber

13 citations , January 2017 in “Cosmetics”

This review discusses in vitro methods for evaluating the effects of hair care products on hair fibers, reporting no new results; the authors emphasize the importance of selecting appropriate and accurate equipment for testing.

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Community Join

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community My hair loss makes no sense I can't stand it

30 upvotes 1 year ago

A user experienced severe hair loss after taking testosterone, despite using treatments like Dutasteride, RU58841, and Minoxidil. The user regrets taking testosterone, as it seems to have permanently increased sensitivity to DHT, accelerating hair loss.

community Scalp testosterone does NOT cause hair loss, what is this baseless claim ?

in Research/Science 13 upvotes 5 months ago

DHT, not testosterone, causes hair loss. Treatments like finasteride, dutasteride, and RU58841 target DHT to manage hair loss.

community Testosterone, gray hair, low vitamin D, and switching to oral Minoxidil

5 upvotes 5 years ago

A woman experiencing hair loss due to high testosterone and low vitamin D is using treatments like Dutasteride, Rogaine, zinc, ketoconazole shampoo, dermastamp, iRestore, multivitamins, scalp massager, and vitamin D. She plans to switch to oral Minoxidil under medical supervision.

community Testosterone and hair loss seeming irrelevance

82 upvotes 3 years ago

The conversation is about the role of testosterone in hair loss and the effectiveness of different treatments. The conclusion is that DHT is the main culprit for hair loss, and finasteride has been proven to work long-term in maintaining and regrowing hair. Testosterone may have a minor effect, but it is not the primary cause of hair loss.

community Will taking hair loss orals affect trt?

5 upvotes 2 weeks ago

Taking finasteride or dutasteride with testosterone replacement therapy (TRT) can increase testosterone levels by blocking its conversion to DHT, potentially raising estrogen levels. Users suggest monitoring for high estrogen symptoms and possibly using an aromatase inhibitor like anastrozole if needed.

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Learn

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learn Hair Transplant

What is an FUE hair transplant? FUE hair transplant extracts individual hair follicles for a minimally invasive, natural-looking result.

learn Hair Multiplication

extract, clone, and reinsert your own hair cells

learn Overview

learn Neem Oil

natural substance from Neem tree with medicinal and pesticidal properties

learn Finasteride

Does hair strand thickness decrease in men with androgenic alopecia? Can finasteride help restore it? Androgenic alopecia thins hair strands by miniaturizing follicles. The pivotal finasteride trials (1,553 men, 1 mg/day, two years) report increased hair counts and improved assessed appearance, but they measured density, not the diameter of individual strands, so the effect on thickness itself is not established.

learn Hair Fibers

cosmetic product that temporarily makes hair appear thicker

learn Stemoxydine

chemical from L'Oreal that encourages hair to enter growth phase

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Clinics

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All 26 clinic results →

Experts

1 / 15 results

Hair Loss Specialist
Dr. Fernando Testi, MD
Benissa, Comunitat Valenciana, Spain

Dr. Fernando Testi, MD