The invention relates to an injection pencil (10) extending along a longitudinal axis (X) for injecting at least one material into human keratinous materials, comprising at least a hollow body (2) intended to house at one end, an injection head (22) in the form of a tip pencil for the delivery of a micro-implant (40) of the at least one material and at the other end, at least one control member (9) acting on the said micro-implant (40) and moving the said micro-implant (40) from an inactive position in which it is arranged inside the said body (2) to an active position in which it is at least partially arranged outside the said body (2).
