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GlossaryArrector Pili Muscle

small muscle causing hair to stand up, creating goosebumps

The arrector pili muscle is a small, smooth muscle attached to the base of a hair follicle. When it contracts, usually in response to cold or emotional stimuli, it causes the hair to stand up, a phenomenon known as "goosebumps." This muscle plays a role in thermoregulation and can also be involved in the body's response to stress.

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research Epidermal Cells Expressing Putative Cell Markers in Nonglabrous Skin Near the Distal End of the Arrector Pili Muscle

5 citations, January 2016 in “Stem Cells International”

Certain skin cells near the base of hair muscles may help renew and stabilize skin, possibly affecting skin disorder understanding.

research The Arrector Pili Muscle and the Follicular Unit of the Scalp

2 citations, September 2002 in “Dermatologic Surgery”

Each group of hair follicles on the scalp shares one muscle that helps control hair movement.

research The Arrector Pili Muscle and the Follicular Unit of the Scalp: A Microscopic Anatomy Study

24 citations, September 2002 in “Dermatologic Surgery”

The study found that hair follicles are above muscle connections in the scalp, which may help protect stem cell areas.

research Cell Types Promoting Goosebumps Form a Niche to Regulate Hair Follicle Stem Cells

77 citations, July 2020 in “Cell”

Muscles and nerves that cause goosebumps also help control hair growth.

research Male Pattern Alopecia: A Histopathologic and Histochemical Study

94 citations, August 1975 in “Journal of Cutaneous Pathology”

Male pattern baldness involves smaller hair follicles, larger oil glands, and other tissue changes, but not major blood supply issues.

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community Peptides that Stop Hair Loss? | In-depth Literature Review Video

in Research/Science 71 upvotes 4 months ago

Peptides like TB500, KPV, GHK-CU, and BPC-157 are overhyped for hair growth with limited proven effectiveness in humans. Combining peptides with delivery methods like iontophoresis and sonophoresis shows promise, but many claims remain unproven.

community The Real Cause Of Androgenetic Alopecia

in Research/Science 667 upvotes 1 month ago

Androgenetic alopecia is caused by DHT affecting hair growth. Finasteride and minoxidil are used to manage hair loss by blocking DHT and promoting hair growth.

community New Treatments, and a Huge Group Buy with Lots of Research

in Research/Science 109 upvotes 1 year ago

A user is organizing a group buy for various compounds aimed at reversing hair loss and gray hair, and improving brain health and fat loss. The user has developed a treatment plan based on extensive research and is inviting others to participate, with the option to choose only the compounds they need.

community progress has been insane, been having a bad shed for about a month or 2, can anyone explain?

in Progress Pictures 678 upvotes 3 months ago

User experienced significant hair regrowth using minoxidil and dutasteride, along with microneedling, vitamins, and massages. Despite recent shedding, they hope it's a synchronized hair cycle and plan to continue the treatment.

community Fats on your Head to Stop Hair Loss?

in Research/Science 138 upvotes 9 months ago

The conversation discusses the potential of long-chain unsaturated fatty acids, like oleic and linoleic acid, as an additional treatment for hair loss, which may inhibit the enzyme responsible for converting testosterone to DHT and promote hair growth. Users humorously suggest using oils topically and discuss other hair loss treatments, but the main focus is on the science behind fatty acids and their role in hair health.

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