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research Evaluation method of the degree of hair damage. (I). Measurement of tensile strength of human hair by "the multi-point tension test method".

1 citations , January 1987 in “Journal of Society of Cosmetic Chemists of Japan”

This study used a multi-point tension test method to evaluate hair damage over time and found it useful for assessing the effects of cosmetics and metal content on hair strength.

research Application of single hair fibre tensile measurements to create an industry‐standard heat damage scale for hair

July 2025 in “International Journal of Cosmetic Science”

In this study, researchers developed a new 6-point scale for evaluating heat damage to hair from straighteners, finding a strong correlation between technical damage measurements and human perception of hair damage.

research Discovery of a sol–gel reinforcing the strength of hair structure: mechanisms of action and macroscopic effects on the hair

2 citations , February 2016 in “Journal of sol-gel science and technology”

This study found that 3-aminopropyltriethoxysilane penetrates hair fibers and improves the mechanical resistance of dry hair, addressing the needs for increased body in fine hair.

research Physical and mechanical properties of the hair shaft: A review of measurement techniques to verify the efficacy of cosmetic products

January 2024 in “Seven Editora eBooks”

This paper reviews various techniques for measuring the physical and mechanical properties of human hair fibers, emphasizing their importance in developing effective cosmetic products.

research Clinical and instrumental characterization of hair and scalp aging in nonbalding Caucasian women

August 2018 in “Journal of The American Academy of Dermatology”

Aging significantly affects the hair and scalp of nonbalding Caucasian women, with changes that differ from male pattern baldness.

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Community Join

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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 Doesn’t Cause Hair Loss: Stop the BS

137 upvotes 11 months ago

Creatine does not cause hair loss, despite many users reporting personal experiences of hair shedding. Scientific evidence shows no link between creatine and increased hair loss or hormone changes.

community Creatine and hair loss...you're not crazy.

8 upvotes 7 months ago

Creatine may increase DHT levels, potentially causing hair loss in some people, though experiences vary. Treatments like finasteride or minoxidil are suggested to manage potential hair loss.

community Just a reminder: disregard all the anecdotal evidence, the science is clear, creatine doesn't cause or worsen hair loss

110 upvotes 10 months ago

Creatine does not cause or worsen hair loss, despite some anecdotal reports of hair thinning. The discussion emphasizes that these reports are not supported by scientific evidence.

community 5 Months on topical Fin/Min progress: grows hair and boobs

in Progress Pictures 159 upvotes 11 months ago

The user experienced significant hair growth using topical finasteride and minoxidil but noticed nipple changes, suggesting early gynecomastia. They plan to stop the treatment and consider blood work to check hormonal balance.

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Learn

6 / 800 results

learn vitamin b2

Does Vitamin B5 (Pantothenic Acid) support hair strength and thickness? Severe pantothenic acid deficiency causes hair loss in animals. There is no good evidence that extra B5 thickens or strengthens hair in people who are not deficient, and EFSA (2012) did not accept a hair claim for a B-vitamin combination.

learn Vitamin C

Can low Vitamin C levels affect hair strength or thickness? Severe vitamin C deficiency (scurvy) changes hair, causing corkscrew hairs. There is no good evidence that mildly low levels thin hair.

learn oleic acid

How does Oleic Acid support hair follicle strength and growth? Lab and animal studies suggest oleic acid may help the scalp barrier and hair shaft. No human trial shows that it strengthens follicles or slows hair loss.

learn L-cysteine

Can taking L-cysteine orally really strengthen hair from the inside? No verified study shows that L-cysteine on its own strengthens hair. The one controlled trial found tested a multi-ingredient supplement in women with shedding and did not measure hair strength.

learn Latanoprost

How long does it usually take to see results from latanoprost for hair growth? There is no established timeline: the only human scalp trial, a 16-man pilot, measured a hair-density increase at 24 weeks using latanoprost 0.1% — twenty times the strength of the glaucoma eye drop — and faster figures quoted elsewhere come from eyelash and animal observations. Scalp use is off-label and experimental.

learn Rosemary

Herb whose oil is used in hair care

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Clinics

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Experts

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SMP Specialist
Hairo Fallas
Newark, NJ, United States

Hairo Fallas