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The conversation discusses the potential of topical cetirizine (Zyrtec) for hair growth in comparison to minoxidil, noting cetirizine's ability to reduce prostaglandin D2, which inhibits hair growth. Users share mixed experiences with cetirizine for allergies and scalp health, and there's a mention of the risk of dementia with long-term antihistamine use.

Excess Vitamin A and topical retinoids can cause diffuse hair shedding. The user suspects their chronic telogen effluvium may be linked to using adapalene, a topical retinoid.

The conversation discusses using ketoconazole, an anti-androgen, for hair loss and whether mesotherapy with dermarolling could enhance its absorption into the scalp. The user questions if the typical 2% ketoconazole shampoo dose would be effective when used after dermarolling to target androgen receptors in the scalp.

The user is asking if observed hair growth is new or old hairs dying off. They mention using finasteride, minoxidil, and microneedling.

Applying Epidermal Growth Factor (EGF) topically may improve skin and potentially promote scalp health and hair growth, especially after microneedling. The user shares their positive experience with EGF and provides a product link.

The user experienced hair regrowth after 4 months of using topical finasteride and minoxidil, 2 weeks of dermatolling, and possibly tretinoin. They also noted improved mental health and reduced weight training.

Microneedling is discussed as a method to improve hair growth, with users sharing their experiences and results using different needle depths and frequencies. Treatments mentioned include minoxidil, finasteride, rosemary oil, and saw palmetto supplements.

The user is using a solution of 5% minoxidil and 0.1% finasteride with micro-needling and is considering adding 1mg oral finasteride. They notice small hairs on their forehead and are questioning if these indicate potential regrowth.

A 26-year-old male considering a hair transplant is using topical finasteride and minoxidil, planning to start feminizing hormone replacement therapy (HRT) with estrogen and spironolactone. Many suggest waiting to see the effects of HRT, which may significantly regrow hair, before deciding on a transplant, and recommend adding microneedling and possibly switching to oral treatments for better results.

HMI 115 did not work as expected for hair regrowth in humans, unlike in macaque monkeys. There is anticipation for further research on prolactin's role in hair loss, with expectations that pharmaceutical companies will likely solve this before universities.