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research Influence of Hair Growth Cycle on Lipid Composition of Mouse Epidermis and Dermis.

6 citations , November 1960 in “Experimental Biology and Medicine”

In this study, despite morphological differences in the hair growth cycle stages, the lipid composition of the epidermis and dermis showed no significant variation, though water content and cholesterol levels differed between these skin layers.

research Scanning Electron Microscopic Study on Collagen Fibrils in the Mink Dermis during the Hair Cycle and Growth

January 1994 in “Nihon Chikusan Gakkaiho”

This study observed that mink dermal collagen fibrils undergo structural changes during the hair cycle, with increased fiber thickness and bundle density as minks grow.

research Neues aus der Haarforschung: Einfluss von Prolaktin, Retinoiden und Transforming Growth Factor-β auf das Haarwachstum

3 citations , February 2005 in “Aktuelle Dermatologie”

This study found that prolactin can induce premature catagen in both mouse and human hair follicles and suggests that targeting prolactin and TGF-β receptors may be promising for treating androgenetic alopecia.

research Squaric Acid Dibutylester Promotes Innate Immune-Driven Hair Growth with CD206+ Macrophage Accumulation in the Dermis

September 2025 in “JID Innovations”

This study suggests that macrophages, particularly CD206⁺ macrophages, play a crucial role in squaric acid dibutylester-induced hair growth in alopecia areata treatment.

research 440 Squaric acid dibutylester, used in alopecia areata immunotherapy, promotes innate immune-driven hair growth with CD206+ macrophage accumulation in the dermis

July 2024 in “Journal of Investigative Dermatology”

This study suggests that macrophages, especially CD206+ subsets, play a key role in hair growth induced by squaric acid dibutyl ester, a therapy used for alopecia areata.

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Community Join

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community Derm told me that my whey protein usage is speeding up hair loss?

26 upvotes 5 months ago

Whey protein is unlikely to cause hair loss, and some users suggest it might be beneficial if dietary protein is insufficient. Hair loss is generally considered genetic, and there is skepticism about the dermatologist's advice to switch from whey protein to whole foods.

community Is this growth? Should i keep doing this?

in Is this regrowth? 58 upvotes 1 year ago

The user has been using Minoxidil, vitamins, and a derma roller for 2.5 months with some regrowth observed. They are hesitant to add finasteride or dutasteride due to potential side effects, considering topical finasteride as a safer option.

community Sunlight: Does it Stimulate Hair Growth or Hair Loss?

in Research/Science 64 upvotes 2 years ago

The conversation discusses whether sunlight exposure affects hair growth or loss, with mixed anecdotes and theories but no clear consensus. Some suggest moderate sunlight can benefit hair by providing vitamin D, while others doubt its effectiveness compared to treatments like Minoxidil or finasteride.

community Need advice, seeing growth by using just a derma roller

10 upvotes 6 years ago

User reports using a derma roller daily, seeing new hair growth along the hairline without using Minoxidil or finasteride. They seek advice on further promoting hair growth with their current routine.

community Is microneedling really that effective?

in Microneedling 35 upvotes 1 year ago

Microneedling's effectiveness for hair growth is debated, with some users reporting positive results when combined with minoxidil and finasteride, while others experienced scarring and no benefits. Needle depth and frequency vary, with some suggesting 0.5-1mm as effective, but caution is advised to avoid overuse and potential harm.

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