Optimal Microneedle Length for Hair Regrowth in Hair Cycle Arrest (Alopecia X) in Six Dogs

December 2023 in “ Veterinary dermatology ”

Yeong‐Hun Kang, Min‐Sun Kim, Soon‐Beom Kang, Jae‐Eun Hyun, Cheol‐Yong Hwang

microneedle hair regrowth hair cycle arrest alopecia X pruritus alopecia relapse itching hair loss

Studysummary This study found that microneedling with longer needles (3 mm) showed better hair regrowth in dogs with hair cycle arrest, although most experienced recurrent hair loss during follow-up. Some dogs also developed minor, temporary itching.

Our plain-language summary. Not medical advice or a treatment recommendation. Consult a qualified healthcare professional before changing treatment. Full disclaimer

The study investigated the optimal microneedle length for hair regrowth in six dogs with hair cycle arrest (HCA). Three needle lengths (1 mm, 2 mm, and 3 mm) were tested on different sections of alopecic sites. Results showed that 3 mm needles led to hair regrowth in all treated sections after 3 months, while 2 mm needles were less effective, and 1 mm needles showed minimal efficacy. Two dogs experienced transient pruritus, and five dogs had recurrent hair loss between 5 and 16 months. The study concluded that longer needles are more effective for stimulating hair regrowth in dogs with HCA, although alopecia relapse and minor pruritus are potential side effects.

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