Yes. NMC registration is NMC registration; RMNs and children’s nurses train in injectables on the same basis as adult-field nurses. Insurers look at your registration, training and scope planning rather than your field. Expect to work harder on facial assessment experience, and expect no barrier at the eligibility stage.
This question fills nursing forums because people conflate field of practice with eligibility. The register is the qualification. What field changes is your starting familiarity: an aesthetics consultation is an adult, elective, cosmetic conversation, and an RMN’s consultation and risk-assessment skills often transfer better than anyone expects, while the facial anatomy work is new for almost everyone regardless of field.
Check your insurer accepts your profile before booking (we confirm this in writing during the free eligibility review), then the standard pathway applies: nurse route, foundation course, prescriber arrangement.