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Glossary Terminal Hair Density

number of thick, pigmented hairs per unit area

Terminal Hair Density refers to the number of thick, pigmented hairs (known as terminal hairs) per unit area of the scalp or other body regions. This measurement is often used in clinical settings to assess hair growth patterns, diagnose hair loss conditions like alopecia, and evaluate the effectiveness of hair restoration treatments.

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Research

5 / 1000+ results

The Predictive Value of Midscalp Hair Density and Terminal Hair Percentage in the Severity Evaluation of Female Pattern Hair Loss Assessed by Trichoscan in a Sample of Chinese Population

research The Predictive Value of Midscalp Hair Density and Terminal Hair Percentage in the Severity Evaluation of FPHL Assessed by Trichoscan in a Sample of Chinese Population

1 citations , December 2022 in “Clinical, Cosmetic and Investigational Dermatology”

In this study, TrichoScan characteristics, particularly hair density and terminal hair percentage in the midscalp, were found to predictively classify female pattern hair loss in a Chinese population.

research The Density Issue in Hair Transplantation

32 citations , September 1997 in “Dermatologic Surgery”

This study found that mini-micrografting and plug methods achieve comparable hair density, but mini-micrografting requires fewer sessions due to its dense graft packing.

research Quantitative trichoscopic analysis of hair density in people attending tertiary care hospital – A cross-sectional study

1 citations , August 2024 in “Journal of Cutaneous and Aesthetic Surgery”

In this observational study, hair density was found to vary with age, as measured in subjects from a dermatology outpatient department, with males showing a mean unit density of 104.78 and females 108.36.

The 1,927-nm Fractionated Thulium Laser Monotherapy Increases Hair Density in Patients with Male Pattern Hair Loss in Brazil: Prospective Clinical Study

research The 1,927-nm fractionated thulium laser monotherapy increases hair density in patients with male pattern hair loss in Brazil: prospective clinical study

December 2025 in “Medical Lasers”

This prospective study found that 1,927-nm fractionated thulium laser treatment significantly increased hair and terminal hair counts in 11 men with pattern hair loss, although it did not change average hair thickness, suggesting it may be a promising therapy for this condition.

research Mapping the hair density, thickness, and volume in normal and androgenetic alopecia subjects with the digital microscope

December 2022 in “JEADV Clinical Practice”

In this study, researchers found that using a handheld digital microscope, hair diameter was a better determinant of perceived alopecia severity in androgenetic alopecia than hair density.

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Community Join

5 / 543 results

community 52 year old norwood 6 vellus to terminal, 5 months progress

12 upvotes 2 months ago

A 52-year-old with Norwood 6 hair loss shows progress after 5 months using topical dutasteride, LLLT, copper peptides, Ulo serum, Minoxidil, cetirizine, and microneedling. Native hair is regrowing from vellus to terminal, with increased density in previously bald areas.

community 15 months topical 5% min and 0.5 dut. Is this also regrowth? Or could these grow into terminal hairs at some point?

4 upvotes 1 week ago

The user has been using topical 5% minoxidil and 0.5 mg dutasteride for 15 months, noticing stronger hair and some new growth. They have experienced hair loss for 10 years, underwent two hair transplants, and are seeing density improvements, particularly in the frontal scalp.

community Turning vellus hairs into terminal hair

in Research/Science 12 upvotes 1 year ago

People are discussing hair loss treatments, including minoxidil, finasteride, and RU58841, to turn vellus hairs into terminal hairs. Some users also mention using antibiotics, oral minoxidil, dutasteride, DHT blockers, biotin, and natural remedies like onion juice and seeds to improve hair growth.

community Terminal hairs growing in, but derm still says I’m going to go bald in the years to come??

in Chat 5 upvotes 1 year ago

A 30-year-old woman with a history of anemia and low vitamin D experienced hair shedding, which improved after addressing nutrient deficiencies. Despite regrowth of terminal hairs, her dermatologist recommended treatments like minoxidil and spironolactone to prevent future bald spots, but she is cautious due to family history of hormone-related cancers.

community can we talk about the effect of DHT on hair TEXTURE (not just thickness/density)

41 upvotes 1 month ago

Finasteride treatment improved hair texture and reduced frizz for some users, though full restoration of original texture may take time. Hair texture changes were noted across the head, with some areas responding faster to treatment.

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