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research What is the best sampling region for endocrine hair analysis? A comparison between the posterior vertex and occipital region and recommendation for standardization

9 citations , April 2025 in “Psychoneuroendocrinology”

This study found no consistent differences between the posterior vertex and occipital region for hair hormone analysis, but noted significant variations in specific hormone concentrations, highlighting the need for standardized sampling practices.

research Esthetic importance of parietal eminence area (posterior parietal triangle), an essential island of scalp requiring hair restoration

October 2024 in “Journal of Cutaneous and Aesthetic Surgery”

The authors suggest that during hair transplantation for hair loss, the parietal eminence area should be prioritized along with the mid-scalp to address future noticeable thinning, especially since this area often becomes more conspicuous over time.

research Aesthetic Importance of the Parietal Eminence Area (Posterior Parietal Triangle), an Essential Island of Scalp Requiring Hair Restoration

May 2022 in “Hair transplant forum international”

This study concluded that hair transplants including the parietal eminence area can enhance aesthetic balance and provide indirect cosmetic benefits, even when the vertex is left untreated due to limited donor availability.

research Micro-segmental analysis of the entry pathway and distribution of zolpidem in hair from different scalp regions after a single dose

May 2023 in “Frontiers in chemistry”

This study found that hair from the vertex posterior is a reliable sampling region for detecting zolpidem intake, showing consistent drug concentration and peak position compared to other scalp regions.

research Nomenclature Proposal for the Zones and Landmarks of the Balding Scalp

8 citations , April 2001 in “Dermatologic Surgery”

This proposal presents a standardized system for naming areas of the balding scalp to improve communication among hair restoration professionals, defining major regions and introducing new landmarks.

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community Severe copper deficiency, and also zinc deficiency. Looking for testimonials.

2 upvotes 9 months ago

A 36-year-old man with androgenetic alopecia suspects copper and zinc deficiencies may be accelerating hair loss and is supplementing copper to address this. He is also monitoring blood sugar levels due to previous prediabetes concerns and plans to test for insulin resistance.

community The Real Reason For Hair Loss?

8 months ago

Hair loss is linked to scalp fibrosis and tension, which result from chronic mechanical stress and androgenic signaling. Treatments include blocking androgens with finasteride, promoting hair growth with topical minoxidil, and improving scalp mobility through exercises.

community Thinning in Hairline and Vertex - What do I do?

in General 345 upvotes 9 months ago

A 25-year-old male is experiencing hair thinning at the hairline and vertex, considering using a dermapen or dermastamp, and seeking advice on whether to continue with natural remedies like onion juice and rosemary oil or start using minoxidil or finasteride. He is also looking for recommendations on microneedling devices.

community Do I need to cut/shave my hair for effective microneedling on the vertex?

in General 68 upvotes 1 year ago

Microneedling on the vertex may require trimming hair to ensure needles reach the scalp effectively. Using a needle length of 1.0–1.5 mm is suggested, and longer hair might get damaged if not cut.

community Dutasteride vs. Finasteride: Some interesting data about vertex hair regrowth

323 upvotes 2 months ago

Dutasteride 2.5mg is more effective for vertex hair regrowth than finasteride and lower doses of dutasteride, with effects lasting longer after discontinuation. Finasteride's effectiveness decreases after 36 weeks, and sexual side effects are similar between the two treatments.

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