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Did you mean Hair Growth Rate?

Glossary Hair Growth Rate

rate at which hair length increases over time

Hair Growth Rate refers to the speed at which hair grows, typically measured in millimeters or inches per month. On average, human hair grows about 0.5 inches (1.25 cm) per month, though this can vary based on factors like genetics, age, health, and nutrition. Understanding this rate is crucial for professionals dealing with hair loss treatments, hair care products, and clinical studies related to hair growth and alopecia.

Related Terms

Research

5 / 1000+ results

research Reduced Linear Hair Growth Rates of Vellus and of Terminal Hairs Produced by Human Balding Scalp Grafted onto Nude Mice

23 citations , December 1991 in “Annals of the New York Academy of Sciences”

This study reported that human balding scalp grafted onto nude mice showed reduced linear growth rates of both vellus and terminal hairs.

research Gender differences in scalp hair growth rates are maintained but reduced in pattern hair loss compared to controls

11 citations , November 2015 in “Skin Research and Technology”

This study found that individuals with patterned hair loss, both male and female, showed a slower linear hair growth rate compared to controls with hair of equal thickness.

Why Care About Linear Hair Growth Rates? A Study Using In Vivo Imaging and Computer-Assisted Image Analysis After Manual Processing in Unaffected Male Controls and Men with Male Pattern Hair Loss

research Why care about Linear Hair Growth Rates (LHGR)? A study using in vivo imaging and computer assisted image analysis after manual processing (CAIAMP) in unaffected male controls and men with male pattern hair loss (MPHL)

7 citations , September 2014 in “European Journal of Dermatology”

This study found a significant positive correlation between hair thickness and growth rate, with a notably slower growth rate observed in men with male pattern hair loss compared to healthy controls.

research Variation in Muskox (Ovibos moschatus) Guard Hair Growth Rates: Implications for Measuring Chronological Biomarkers

April 2024 in “Journal of wildlife diseases”

This study reported that captive muskoxen in Fairbanks, Alaska have significantly faster and variable guard hair growth rates compared to free-ranging Greenland muskoxen, indicating that a universal hair growth rate cannot be applied across different muskox populations or time periods.

research Hair growth rate estimation in North American ursids

January 2025 in “Conservation Physiology”

This study developed and tested two methods to accurately quantify hair growth rates in polar, black, and grizzly bears using dye application and isotopically labelled amino acids, revealing growth rate variations by individual and season.

View more "hair growth rates" in research →

Community Join

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community Melatonin and hair growth: legit or scam?

6 upvotes 3 years ago

Melatonin may improve hair growth rate and thickness. The user is seeking input on the legitimacy of this claim.

community Common hair-loss drug consistently associated with higher rates of psychiatric harm

in Research/Science 183 upvotes 11 months ago

Finasteride and dutasteride can cause psychiatric side effects like depression and suicidal thoughts in some users, especially those with a history of mental health issues. While some users experience positive hair growth results, others face severe psychological effects, raising concerns about their safety and the need for careful monitoring.

community Oral Biotin and Topical Minoxidil have a synergy effect in increasing hair growth, the study was only done in healthy subjects and it was only 14 days but it does prove that biotin can play a significant role as an adjunct treatment.

168 upvotes 1 year ago

Oral biotin combined with topical minoxidil may increase hair growth rate, though the study was limited to healthy subjects and did not measure hair density. Some users report personal benefits from biotin, such as faster nail growth and healthier hair, but concerns about acne and study quality were also mentioned.

community How long does hair actually take to recover from a shed?

in Finasteride/Dutasteride 4 upvotes 4 weeks ago

Hair regrowth after shedding typically takes 4-6 months, with variations depending on individual hair growth cycles. Finasteride can cause shedding, but new hair will grow back at its natural rate.

community Some Questions Regarding FUE Hair Loss Surgery

4 upvotes 9 years ago

The conversation discusses FUE hair transplant surgery, including questions about donor area recovery, success rates, precautions, hair growth rate, and the safety of PRP injections. It also inquires about using hairpieces post-surgery.

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Learn

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learn Hair Transplant

What is the graft survival rate in hair transplants? Graft survival rates in hair transplants typically range from 90% to 95%.
How long does it take for transplanted hair to grow after a hair transplant? New hair growth after a transplant typically starts around 3-4 months.
When will I see new hair growth after a hair transplant? New hair growth usually starts 2-4 months after a hair transplant.

learn Thymosin Beta 4

How is Thymosin Beta 4 typically incorporated into experimental or advanced hair growth products? Thymosin Beta 4 is not an ingredient in any approved or regulated hair-loss product — it is an unapproved research peptide (sold online as TB-500). Published hair studies are in rats and mice only, from one research group; there are no human trials, and the same literature reports it can promote tumour growth.