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Glossary Hair Growth Activity

biological processes promoting hair fiber development and elongation

Hair Growth Activity refers to the biological processes and mechanisms that promote the development and elongation of hair fibers from hair follicles. This includes the anagen (growth) phase of the hair cycle, where cells in the hair bulb divide rapidly, leading to hair shaft formation and elongation. Factors influencing hair growth activity can include genetics, hormones, nutrition, and overall health.

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Research

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research Hair Growth Activity of Crataegus pinnatifida on C57BL/6 Mouse Model

25 citations , November 2012 in “Phytotherapy Research”

In this study, oral administration of Crataegus pinnatifida extract was associated with hair growth promotion in mice by inducing anagen phase and enhancing cell signaling related to hair follicle development.

research Hair Growth Activity of Three Plants of the Polynesian Cosmetopoeia and Their Regulatory Effect on Dermal Papilla Cells

5 citations , September 2020 in “Molecules”

In this study, extracts from three Polynesian plants—Bidens pilosa, Calophyllum inophyllum, and Fagraea berteroana—were found to increase dermal papilla cell proliferation and modulate hair growth-related gene expression, suggesting potential for stimulating hair growth.

research USING HAIR GROWTH ACTIVITY, PHYSICAL STABILITY, AND SAFETY TESTS TO STUDY HAIR TONICS CONTAINING ETHANOL EXTRACT OF LICORICE (GLYCYRRHIZA GLABRA LINN.)

4 citations , October 2017 in “International Journal of Applied Pharmaceutics”

This study found that hair tonics with 5% and 10% licorice extract promoted hair growth in rabbits similarly to 2% minoxidil and were generally safe, although they caused mild eye irritation at the 2.5% concentration.

research Hair Growth Activity Test of White Ginger (Zingiber officinale Roscoe) Extract and Red Ginger (Zingiber officinale Rubra) Extract

2 citations , January 2018 in “Proceedings of the International Conference of Science, Technology, Engineering, Environmental and Ramification Researches”

In this study, red ginger extract gel showed stronger hair growth activity in male rats compared to a 2% minoxidil treatment, while white ginger extract was less effective.

research Hair Growth Activity of Trichosanthes dioica R. Leaves

2 citations , January 2011

This study found that topical 5% aqueous extract of Trichosanthes dioica R. leaves significantly promoted hair growth in rats compared to both a control and minoxidil treatment.

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Community Join

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community Research: Minoxidil grows hair by suppressing androgen activity (DHT) in hair follicles.

43 upvotes 6 years ago

Minoxidil may suppress androgen activity in hair follicles, potentially aiding in hair growth and prostate cancer treatment. Users discuss the effectiveness of minoxidil and finasteride for hair maintenance and regrowth, with some preferring topical applications over oral due to safety concerns.

community Tretinoin vs. micro-needling: what increases sulfotransferase activity more?

in Research/Science 1 upvotes 1 year ago

Tretinoin and microneedling both enhance hair growth through different mechanisms, with microneedling being considered safe for long-term use. Optimal microneedling needle length varies, but 0.8 mm is suggested for hair growth, and a Dermastamp is recommended to avoid skin damage.

community PP405: The Ultimate Hair Loss Drug for Complete Hair Growth

211 upvotes 1 year ago

PP405 is a new hair loss treatment in phase 2 trials that may promote hair growth by increasing lactate production and activating hair follicle stem cells. It could potentially replace hormone-disrupting treatments like Minoxidil and finasteride.

community Does caffeine inhibit 5-α-reductase?

4 upvotes 6 years ago

Caffeine may promote hair growth and potentially inhibit 5-α-reductase activity in hair follicles, but its effectiveness and systemic impact remain unclear. Users discuss using topical caffeine solutions, with some experiencing no side effects compared to finasteride.

community Hair loss research focused on chemistry for decades because we misunderstood the mechanics of growth.

51 upvotes 7 months ago

Hair growth relies on mechanical forces, not just chemicals, with tissue acting like a motor. Minoxidil and finasteride help, but maintaining tissue elasticity and addressing mechanical issues are essential.

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Learn

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learn KY19382

Experimental compound that activates hair-growth signals, tested only in animals

learn Hair Fibers

cosmetic product that temporarily makes hair appear thicker

learn Bimatoprost

Prostaglandin eye drop used for glaucoma and eyelash growth

learn GHK-Cu

Copper peptide used in skin and hair cosmetics

learn Follistatin

Protein that blocks activin, a growth-regulating signal

learn Hair Transplant

When will I see new hair growth after a hair transplant? New hair growth usually starts 2-4 months after a hair transplant.

learn Caffeine

Does caffeine stimulate hair growth or only slow hair loss? Caffeine stimulates hair follicles in laboratory cultures, and one open-label, manufacturer-funded 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 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 Dexpanthenol

Does dexpanthenol promote hair growth? Reviews describe dexpanthenol mainly as a moisturiser for skin. No controlled trial has shown that it promotes hair growth.

learn Microneedling

How does microneedling boost hair growth in thinning areas of the scalp? Small trials suggest microneedling may help mainly as an add-on to minoxidil; how it works in humans is not established, and the FDA has not cleared any microneedling device for hair loss.

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Clinics

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Hair Transplant
Australian Hair & Scalp Clinics-Hair Regrowth by Herbal Follicular ActivationMelbourne, VIC · AU

Experts

1 / 5 results

SMP Specialist
Hairo Fallas
Newark, NJ, United States

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Hairo Fallas