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Glossary Growth Rate

speed at which hair grows over a specific period

Growth Rate, also known as Growth Velocity, refers to the speed at which hair grows over a specific period of time. Typically measured in millimeters or inches per month, this rate can vary based on factors such as genetics, age, health, and hormonal influences. Understanding growth rate is crucial for both diagnosing hair disorders and planning treatments in trichology and dermatology.

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Research

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research Beyond conventional PRP: a rationale for bioengineered, growth-factor-defined platelet mimetics in alopecia—the precision re-engineered efficacy optimization framework

July 2026 in “Stem Cell Research & Therapy”

This commentary suggests that shifting from inconsistent autologous PRP to more standardized PRP-inspired formulations could improve treatment consistency for alopecia, emphasizing the need for careful characterization and clinical studies to validate safety and efficacy.

research Rational Design of Human Hair Keratin−Driven Proteins for Hair Growth Promotion

August 2024 in “Advanced Healthcare Materials”

In this study, water-soluble recombinant keratins, specifically RK81, were developed and used in microneedles to investigate their effect on hair growth, discovering that more than 40% of the hair follicles responded, demonstrating the potential for hair growth promotion.

research Growth pattern and turnover of carbon and nitrogen measured by stable isotope ratios in the hair of sika deer ( Cervus nippon )

October 2024 in “Rapid Communications in Mass Spectrometry”

This study suggests that the shoulder guard hair of captive sika deer is effective for hair analysis, providing insights into growth patterns and isotopic changes that could aid future research on wild deer using hair samples.

research Growth pattern and turnover of carbon and nitrogen measured by stable isotope ratios in the hair of sika deer (Cervus nippon)

December 2024 in “Institutional Repositories DataBase (IRDB)”

In this study, the authors found that the shoulder guard hair of captive sika deer most accurately reflects dietary information during winter coat growth, useful for analyzing wild deer hair samples.

research Autologous Concentrated Growth Factors Combined with Topical Minoxidil for the Treatment of Male Androgenetic Alopecia: A Randomized Controlled Clinical Trial

4 citations , August 2020 in “Facial plastic surgery & aesthetic medicine”

This study found that combining concentrated growth factor injections with minoxidil treatment significantly improved hair growth and participant satisfaction in male patients with androgenetic alopecia compared to minoxidil alone.

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Community Join

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community Any growth (been taking iron supplements)

in Is this regrowth? 1 year ago

The conversation discusses hair loss treatments, focusing on iron supplements for low ferritin levels and considering finasteride and minoxidil if thinning persists. There is debate over starting with finasteride versus dutasteride, with some users advocating for dutasteride due to its potency, while others caution about potential side effects.

community Effectiveness and Safety of Hair Growth Formulation Containing Tectona grandis L.f (Teak) Leaf Extract

in Chat 33 upvotes 1 year ago

Teak leaf extract shows potential as a mild hair growth promoter for androgenic alopecia, with similar positive trends to minoxidil but without significant side effects. It can be made at home using dried teak leaves and ethanol, though its effectiveness compared to other treatments like finasteride is debated.

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 Unexpected Hair Growth

5 upvotes 9 years ago

A 24-year-old male experienced unexpected hair growth and improved skin and nails after adding daily vegetable juices, including carrot, spinach, celery, and beet, to his diet. He is not using any other treatments like minoxidil, finasteride, or RU58841.

community BREAKTHROUGH: I’m a radiochemist and discovered a radioactive isotope scalp serum that OUTPERFORMS Minoxidil and 5-AR inhibitors! (Lab Data Inside)

in Satire 1 year ago

A satirical post where someone claims to have developed a radioactive isotope scalp serum using Polonium-210 that outperforms Minoxidil and finasteride for hair regrowth. The serum reportedly stimulates DNA repair in hair follicles, leading to significant hair density increase, but the post is met with skepticism and concerns about safety.

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Learn

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learn Caffeine

Does caffeine stimulate hair growth or only slow hair loss? Caffeine stimulates hair follicles in laboratory cultures, and one open-label trial in 210 men found a 0.2% caffeine topical non-inferior to minoxidil 5% on an anagen-ratio endpoint. A 2025 systematic review found only a few small controlled trials, mostly rated low or very low quality, and none in alopecia areata.

learn white tea

Is white tea more effective in topical hair products or as an oral supplement for hair growth? Neither topical nor oral white tea has any human clinical trial behind it for hair growth. Topical use has a more direct mechanistic rationale, but the only verifiable studies are a cell-culture EGCG experiment and a pharmacokinetic study with no hair outcomes.

learn Neem Oil

Oil from the neem tree, used in traditional remedies

learn Epidermal Growth Factor

learn Vascular Endothelial Growth Factor

learn Lavender

Does lavender promote hair growth or just soothe an irritated scalp? A 2016 study found more hair growth in mice treated with lavender oil, but no trial has tested lavender alone for hair loss in people. Lavender oil can cause skin allergy, and case reports link lavender products to breast growth in children.

learn Bimatoprost

Can a lash-growth serum like bimatoprost actually work for your scalp? Bimatoprost (Latisse) is FDA-approved only for eyelashes, not the scalp. In the larger of two Allergan phase 2 scalp trials, every bimatoprost formulation gave smaller hair-count gains than minoxidil 5%; the results were posted to ClinicalTrials.gov but never published in a journal, and scalp use remains off-label and experimental.

learn Dexpanthenol

Does dexpanthenol promote hair growth? Dexpanthenol mainly helps skin and hair hold moisture. No controlled trial has shown that it promotes hair growth.

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Clinics

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Hair Systems
The Golden RatioBalashikha · RU

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