10 citations
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September 2020 in “Journal of Cosmetic Dermatology” Deeper microneedling boosts hair growth, with 0.6mm needles and minoxidil being most effective.
December 2023 in “Veterinary dermatology” Longer 3 mm needles were most effective for dog hair regrowth, but hair loss often returned and some dogs felt itchy.
April 2024 in “Dermatologic surgery” Microneedling at a depth of 0.5 mm is the most effective single treatment for hair loss among the tested depths.
September 2025 in “PubMed” Combining microneedling with drugs and stem cells shows promise for improving hair growth in androgenetic alopecia.
2 citations
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September 2022 in “Dermatologic therapy” Microneedling helps reduce hair-pulling and promotes hair regrowth in trichotillomania patients.