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GlossaryAnagen/Telogen Ratio

measure of hair follicles in growth vs. resting phases

The Anagen/Telogen Ratio is a measure used to assess hair growth and health by comparing the number of hair follicles in the anagen (growth) phase to those in the telogen (resting) phase. A higher ratio indicates a greater proportion of actively growing hair, which is typically a sign of healthy hair growth, while a lower ratio may suggest hair loss or a disruption in the hair growth cycle.

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Effects of Platelet-Rich Plasma on Hair Follicle Count and Hair Ratios in Androgenic Alopecia: Alone or Combined with Other Treatments

research Effects of platelet-rich plasma application on hair follicle count, telogen/anagen ratio, and miniaturized hair ratio in patients with androgenic alopecia: alone or in combination with other treatments

July 2025 in “Journal of Dermatological Treatment”

PRP improves hair growth in androgenic alopecia, especially when combined with minoxidil.

research Finasteride increases anagen hair in men with androgenetic alopecia

129 citations , October 2000 in “British Journal of Dermatology”

Finasteride helps increase hair growth in men with hair loss.

research Amaranthus Extract Promotes Healthy Follicles and Anagen Hair Density-A Randomized Placebo-Controlled, Double-Blinded Study.

October 2025 in “PubMed”

Amaranthus extract cream safely boosts hair growth in men with hair loss.

LB1010 Ashwagandha-Derived Exosome-Like Nanoparticles Significantly Promote Human Hair Growth Ex Vivo and In Vivo by Stimulating the Production of the Anagen Promoting Growth Factor VEGF-A

research LB1010 Ashwagandha-derived exosome-like nanoparticles significantly promote human hair growth ex vivo and in vivo by stimulating the production of the anagen promoting growth factor VEGF-A

July 2024 in “Journal of Investigative Dermatology”

Ashwagandha nanoparticles help hair grow by increasing a growth factor.

research Effects of the RV3466F lotion on female telogen effluvium: Results from a 16 week, multi-centric, controlled, randomized trial

August 2019 in “Journal of The American Academy of Dermatology”

RV3466F lotion significantly reduces hair loss and improves acute telogen effluvium.

Recovery Effects of Oral Supplementation with Polar Lipid-Rich Wheat Extracts on Acute Telogen Effluvium: A Randomized Double-Blind Placebo-Controlled Study

research Recovery Effects of Oral Supplementation with Polar Lipid-Rich Wheat Extracts on Acute Telogen Effluvium: A Randomized Double-Blind Placebo-Controlled Study

May 2025 in “Clinical Cosmetic and Investigational Dermatology”

Wheat extract supplements reduce hair shedding and improve growth in women with hair loss.

Telogen Effluvium: Causes, Diagnosis, and Treatment

research Telogen effluvium

144 citations , July 2002 in “Clinical and Experimental Dermatology”

Telogen effluvium is a common type of hair loss that can resolve on its own or become chronic, with treatment depending on early diagnosis.

Promotion of Anagen, Increased Hair Density, and Reduction of Hair Fall in a Clinical Setting Following Identification of FGF5-Inhibiting Compounds via a Novel 2-Stage Process

research Promotion of anagen, increased hair density and reduction of hair fall in a clinical setting following identification of FGF5-inhibiting compounds via a novel 2-stage process

27 citations , February 2017 in “Clinical, Cosmetic and Investigational Dermatology”

New compounds were found to help increase hair growth and decrease hair loss.

A Proprietary Herbal Extract Against Hair Loss in Androgenetic Alopecia and Telogen Effluvium: A Placebo-Controlled, Single-Blind, Clinical-Instrumental Study

research A proprietary herbal extract against hair loss in androgenetic alopecia and telogen effluvium: a placebo-controlled, single-blind, clinical-instrumental study

1 citations , January 2018 in “Acta dermatovenerologica Alpina, Pannonica et Adriatica (Tiskana izd.)”

The herbal extract was found to effectively reduce and prevent hair loss without any side effects.

research A Novel, Drinkable Food Supplement Formulation Reduces Hair Shedding and Increases the Percentage of Anagen Scalp Hair Follicles in Females with Hair Loss

November 2025 in “Journal of Clinical Medicine”

The drinkable supplement reduced hair shedding and increased hair growth in women.

Efficacy and Safety of a Drinkable Nutraceutical in Premenopausal Women with Telogen Effluvium: A 6-Month, Randomized, Multicenter, Double-Blind, Placebo-Controlled Study

research Efficacy and Safety of a Drinkable Nutraceutical in Premenopausal Women with Telogen Effluvium: A 6-Month, Randomized, Multicenter, Double-Blind, Placebo-Controlled Study

November 2025 in “Dermatology and Therapy”

The drinkable supplement increased hair growth and was safe for women with hair loss.

research Fluridil, a Rationally Designed Topical Agent for Androgenetic Alopecia

August 2002 in “Dermatologic Surgery”

Fluridil safely promotes hair growth in men with androgenetic alopecia.

research Postpartum telogen effluvium

7 citations , January 2015 in “Journal of the European Academy of Dermatology and Venereology”

Only about 20% of women have hair loss after childbirth severe enough to be considered clinically significant.

research A stain for plucked anagen hairs

17 citations , August 1979 in “Journal of The American Academy of Dermatology”

A new staining method helps tell growing from resting hairs to diagnose hair loss.

research Approach to the adult female patient with diffuse nonscarring alopecia

67 citations , November 2002 in “Journal of The American Academy of Dermatology”

The document concludes that careful evaluation is key to diagnose and treat women with hair loss, with tests for thyroid, iron, and hormones as needed.

research Hair Follicle Miniaturization in a Woolly Hair Nevus

6 citations , February 2016 in “American Journal of Dermatopathology”

The boy with woolly hair nevus had thinner hair and abnormal hair follicles, which improved with treatment but worsened when treatment stopped.

research Is TrichoScan a new diagnostic method for diffuse hair loss?

2 citations , January 2014 in “Turkish Journal of Medical Sciences”

TrichoScan effectively diagnoses different types of hair loss and is linked to low iron stores in patients.

research An open-label, single-arm, clinical study to evaluate the efficacy and safety of Nyumi happy hair gummies in healthy adult subjects with hair fall

1 citations , December 2024 in “Cosmoderma”

Nyumi Happy Hair Gummies significantly improved hair growth, reduced hair fall, and enhanced nail health without side effects.

Platelet-Rich Plasma-Derived Exosomes Modulate Follicular Regeneration: A Comparative Mechanistic Analysis with Minoxidil in a Preclinical Model of Androgenetic Alopecia

research Platelet-Rich Plasma-Derived Exosomes Modulate Follicular Regeneration: A Comparative Mechanistic Analysis with Minoxidil in a Preclinical Model of Androgenetic Alopecia

September 2025 in “Bioscientia Medicina Journal of Biomedicine and Translational Research”

Combining PRP-Exo with minoxidil significantly improves hair growth in androgenetic alopecia.

Effectiveness and Safety of Hair Growth Formulation Containing Tectona Grandis L.f (Teak) Leaf Extract: A Randomized, Double-Blind, Placebo-Controlled Study on Males with Androgenic Alopecia

research Effectiveness and Safety of Hair Growth Formulation Containing Tectona grandis L.f (Teak) Leaf Extract: A Randomized, Double-Blind, Placebo-Controlled Study on Males with Androgenic Alopecia

March 2024 in “Journal of Evidence-Based Integrative Medicine”

Teak leaf extract may effectively and safely promote hair growth in males with androgenic alopecia.

Capillary Anti-Aging: A New Milestone In Dermatology

research «Antiaging capilar», un nuevo hito en la dermatología

January 2024 in “Más dermatología”

"Antiaging capilar" aims to restore youthful hair appearance by addressing age-related changes.

The Effect of an Oral Product Containing Amla Fruit on Female Androgenetic Alopecia: A Randomized Controlled Trial

research The effect of an oral product containing Amla fruit (Phyllanthus emblica L.) on female androgenetic alopecia: A randomized controlled trial

July 2023 in “Journal of Ethnopharmacology”

Amla fruit syrup improved hair growth and satisfaction in women with hair loss without significant side effects.

research 1417 Interest of a cinchona succirubra extract and its association with caffeine in hair loss

April 2023 in “Journal of Investigative Dermatology”

Cinchona succirubra extract with caffeine improves hair growth and reduces hair loss.

research Histopathologic Evaluation of Alopecias

90 citations , June 2006 in “The American Journal of Dermatopathology”

The document concludes that accurate diagnosis of different types of hair loss requires careful examination of hair and scalp tissue, considering both clinical and microscopic features.

A Comparative In Vivo and In Vitro Evaluation of Hair Growth Potential of Extracts and an Isolate from Petroleum Ether Extract of Cuscuta Reflexa Roxb

research A comparative in vivo and in vitro evaluation of hair growth potential of extracts and an isolate from petroleum ether extract of Cuscuta reflexa Roxb

7 citations , September 2014 in “Beni-Suef University Journal of Basic and Applied Sciences”

Cuscuta reflexa extracts and an isolate promoted hair growth and could be natural treatments for hair loss.

research Hair loss.

5 citations , October 1984 in “The BMJ”

Up to 50% of scalp hair can be lost before it appears thin, and treatment is only needed for hair loss caused by diseases or deficiencies.

Overactive Bladder in Men: Finasteride for Androgenetic Alopecia

research Overactive bladder in men

1 citations , January 2009 in “CRC Press eBooks”

Finasteride increases hair count and improves hair growth with low risk of side effects.

research The Effect of a Food Supplement and a Hair Lotion on the Progression of Androgenetic Alopecia

2 citations , January 2019 in “Journal of Cosmetics, Dermatological Sciences and Applications”

The supplement and lotion significantly reduced hair loss and improved hair health.

research Efficacy and tolerability assessment of a polynucleotide‐based gel for improvement of pattern hair loss Running title: A polynucleotide‐based gel for improvement of pattern hair loss

October 2023 in “Research Square (Research Square)”

Polynucleotide gel injections help reduce hair loss and increase hair thickness in people with pattern hair loss, with few side effects.

research Usefulness of PRP Therapy in Androgenic Alopecia

June 2021 in “European journal of medical and health sciences”

PRP therapy is a safe and effective treatment for hair loss.