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research Sensitive method using protein loss measurements to evaluate chemicalperm damage to human hair restoration by shampoo

January 2002 in “China Surfactant Detergent & Cosmetics”

This study compared shampoos and found that shampoo D, containing polyquaternium-10, guar gum, and dimethicone, was most effective in restoring chemically permed hair.

research Association of Hair Loss With Health Utility Measurements Before and After Hair Transplant Surgery in Men and Women

14 citations , September 2018 in “JAMA Facial Plastic Surgery”

This study found that hair transplant surgery significantly improves health utility scores compared to untreated androgenetic alopecia in both men and women, as perceived by laypeople.

research Finasteride prescribed for hair loss consistently leads to depression. Comment on ‘Depression risk of 5-alpha reductase inhibitors: impact of active-comparator versus non-drug user control groups on risk measurement’

July 2026 in “Postgraduate Medicine”

Results are not reported in this commentary, but it discusses the influence of different control group choices—an active-comparator versus non-drug users—on measuring depression risk in studies of 5-alpha reductase inhibitors.

research Evaluation of Automated Measurement of Hair Density Using Deep Neural Networks

8 citations , January 2022 in “Sensors”

This study analyzed deep learning's application to automate hair density measurement in images and found that YOLOv4 had the best performance among tested algorithms, with a mean average precision of 58.67.

research Hair diameter measurement methods: micrometer caliper versus phototrichogram

2 citations , April 2023 in “Archives of Aesthetic Plastic Surgery”

This study found that measuring hair thickness with a phototrichogram provided significantly thicker readings than using a micrometer caliper, suggesting that the phototrichogram may be more clinically useful for evaluating hair in patients undergoing hair transplantation.

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Community Join

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community Serum DHT CAN'T cause hair loss. Sebum DHT is a better measurement.

in Research/Science 19 upvotes 2 years ago

Serum DHT is mostly inactive; sebum DHT is a better measure for hair loss. Users discuss using finasteride, dutasteride, and topical treatments like KX826 and RU58841 for better scalp DHT suppression.

community We always hear that DUT only lowers scalp DHT by 50% (fin at 40%) but a study within the hair follicle itself shows that DUT nukes DHT to near undetectable levels... so which is it??

in Finasteride/Dutasteride 9 upvotes 1 year ago

Dutasteride significantly reduces DHT levels in hair follicles, potentially more effectively than previously thought. The discussion highlights differences in DHT measurements and the impact on hair loss treatment.

community hairloss treatment, what to expect (bloodwork)

1 upvotes 11 months ago

The conversation discusses hair loss treatment options, focusing on finasteride and its potential effects on gynecomastia. The user is considering finasteride while managing hormone levels with supplements like boron, vitamin D, zinc, magnesium, and P5P, and is advised to consult an endocrinologist for further evaluation.

community Popular hair loss drug linked to higher suicide risk: compared to non-users, finasteride (Proscar/ Propecia) users have a markedly increased risk of depression, anxiety, and suicidal thoughts. Over 30 years of observation, 19,320 suicides were expected.

494 upvotes 11 months ago

Finasteride users may have an increased risk of depression, anxiety, and suicidal thoughts, though some attribute these issues to hair loss itself. The link between finasteride and mental health effects is debated, with varying user experiences.

community Creatine, my hair loss, and my DHT levels. An anecdote with lab values.

165 upvotes 1 year ago

Increased hair loss after starting a 10g daily creatine regimen, possibly linked to elevated DHT levels despite dutasteride use. Stopping creatine reduced shedding, but the exact cause is uncertain, with discussions on exercise and lifestyle impacts.

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Learn

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learn Overview

learn Platelet-Rich Plasma

Are Platelet results permanent, or does hair loss return once treatment stops? Hair loss typically returns after stopping PRP treatment, as effects are not permanent.

learn Vitamin B12

How can you tell if your hair loss is related to low Vitamin B12 levels? Hair loss may indicate low Vitamin B12 if accompanied by fatigue and anemia symptoms.

learn Hair Transplant

What is shock loss after a hair transplant? Shock loss is temporary hair shedding after a transplant, usually resolving in a few months.
What causes hair loss in women that may lead to considering a hair transplant? Genetic factors, hormonal changes, stress, and nutritional deficiencies often cause hair loss in women.

learn Vitamin D

How can I tell if my hair loss is linked to low Vitamin D levels? Hair loss may indicate low Vitamin D levels, but testing is needed for confirmation.

learn Valproic acid

an anticonvulsant repurposed for hair loss via histone inhibition

learn Alopecia Areata

autoimmune disorder causing patchy hair loss

learn Osteopontin

signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss

learn Cetirizine

popular antihistamine showing promise for hair loss as an anti-inflammatory and prostaglandin inhibitor

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Clinics

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All 406 clinic results →

Experts

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SMP Specialist
Hairo Fallas
Newark, NJ, United States

Hairo Fallas