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research Induction of Cell Proliferation and Cell Death in Human Follicle Dermal Papilla Cells by Zinc Chloride

2 citations , January 2019 in “Indian Journal of Pharmaceutical Sciences”

This study found that higher doses of zinc increased cell growth but also induced cell death in human follicle dermal papilla cells, suggesting a narrow dosage range may affect hair regrowth.

research New and Consolidated Therapeutic Options for Pubertal Induction in Hypogonadism: In-depth Review of the Literature

19 citations , December 2021 in “Endocrine Reviews”

This review highlights therapeutic options for inducing puberty in males and females with delayed puberty, emphasizing the need for larger trials to establish the best approaches.

research Rates of Infections, Malignancies, Cardiovascular Outcomes, and Death in Individuals with Hospital-treated Alopecia Areata: A Registry-based Cohort Study in Denmark

May 2025 in “Acta Dermato Venereologica”

This study found that individuals with hospital-treated alopecia areata in Denmark had increased standardized incidence rates of serious infections, herpes zoster infections, lymphoma, cardiovascular events, and death compared to the age- and sex-matched general population.

research Depth of Treatment in the Facial Rejuvenation: The Neglected Point in Facial Mesotherapy

September 2022 in “Journal of Plastic and Reconstructive Surgery”

This article discusses the public interest in mesotherapy for rejuvenation, noting inconsistent evidence of its efficacy, and suggests that revised standards for injection depth may improve patient outcomes.

research Induction of the hair growth phase in postnatal mice by localized transient expression of Sonic hedgehog

231 citations , October 1999 in “Journal of Clinical Investigation”

This study found that administering an adenovirus vector to increase Sonic hedgehog gene expression in mouse skin accelerated the transition of hair follicles into the growth phase, promoting hair growth.

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community How to microneedle without infection

in Microneedling 5 upvotes 1 year ago

Microneedling can cause infections if not done carefully; users suggest using alcohol swabs and reducing needle depth to avoid issues. Proper sanitation and gentle pressure are key to preventing bleeding and infection.

community How do you prevent infection with derma needling / derma stamping?

1 upvotes 1 year ago

The conversation discusses preventing infection from derma stamping for hair loss treatment, with suggestions to reduce needle depth and consider alternatives like tretinoin. The user experienced irritation possibly from zinc chloride and stopped using the shampoo and derma stamping.

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Learn

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learn Microneedling

Technique that makes tiny punctures in the scalp with fine needles

learn Dexpanthenol

Provitamin B5, a moisturiser in hair and skin products

learn Alopecia Areata

autoimmune disorder causing patchy hair loss

learn Neem Oil

Oil from the neem tree, used in traditional remedies

learn Ketoconazole

Antifungal, best known as a dandruff shampoo

learn Scalp Micropigmentation

Is there a risk of infection with scalp micropigmentation? Any skin puncture can become infected, and the risk depends on sterile equipment, uncontaminated ink and aftercare. See a doctor for spreading redness, pus or fever.

learn Exosomes

Are exosomes applied as a serum, an injection, or combined with other hair treatments? Clinics offer exosomes as scalp injections, as serums applied after microneedling, or combined with PRP. No exosome product is FDA-approved, and no reliable evidence shows that any of these methods works.

learn Botox

What’s the science behind Botox injections for androgenetic alopecia? Small published studies and a 2025 meta-analysis report hair-count gains from scalp botulinum toxin injections, but nearly all of them lack control groups, and reviewers of the same literature call the evidence low-quality; the treatment is off-label and not approved for hair loss anywhere.

learn Vitamin B12

Should Vitamin B12 be taken orally or by injection for hair loss treatment? Vitamin B12 can be taken orally or by injection if a deficiency exists.

learn Verteporfin

Is Verteporfin used as a topical treatment, injection, or oral medication for hair loss? Verteporfin is an intravenous drug approved only for an eye condition; it is not approved for hair loss in any form. In the few published hair reports it was injected into the scalp alongside surgical wounding — unverified case reports of one and two patients, not trial evidence.

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