The full content will be available shortly. Thank you for your patience!
Complication following treatment with a microneedling technique for a female pattern hair loss: hair dye-induced tattoo-like pigmentation
- 2026, Volume 84 - Number 2
- Published: March 3, 2026
Complication following treatment with a microneedling technique for a female pattern hair loss: hair dye-induced tattoo-like pigmentation
Anne K. Leroy 1 
, Flavia Oliveira-Xavier-de Brito 1 , Rita F. Cortez-de Almeida 1 , Daniel Fernandes-Melo 1
1 Department of Dermatology, Advanced Institute of Trichology, Rio de Janeiro, Brazil
Anne K. Leroy, Flavia Oliveira-Xavier-de Brito, Rita F. Cortez-de Almeida, Daniel Fernandes-Melo
La información completa de afiliaciones y autor de correspondencia está disponible en la versión original en PDF.
*Correspondence: Anne K. Leroy. Email: annekelly_l@hotmail.com
Abstract
Microinfusion of drugs into the skin (MMP®) is a Brazilian microneedling technique that employs professional tattoo devices for the delivery of pharmacological agents in conditions such as female pattern hair loss. We report an unexpected complication in a 44-year-old female patient who underwent hair dyeing 2 days after the procedure and subsequently developed linear pigmentation on the scalp resembling a tattoo. Trichoscopy revealed pigment deposition at the needle entry points, likely resulting from penetration of the hair dye. Although adverse effects of MMP® are generally mild, this case highlights the importance of counseling patients regarding the use of hair dye following the procedure.
Keywords: Androgenetic alopecia. Microinfusion of drugs into the skin®. Female pattern hair loss.
