Deep dermal and full‐thickness burns are not only difficult to treat, but they are also associated with significant morbidity and mortality. Recent reports have proposed using mesenchymal stromal cells (MSCs) for inducing tissue repair in burn injuries. The study aimed to evaluate the effect of allogeneic MSC transplantation on full‐thickness burns with delayed healing. This study includes five patients with AB B/B burns. All patients received conservative treatments, including cleaning, debridement of necrotic tissue, and silver-based dressing on the burn wounds. Cryopreserved allogeneic MSCs were thawed and rapidly expanded and used for application in burned patients. MSCs were implanted into preclotted platelet‐rich plasma onto the surface of burn wounds.

All treated burn wounds showed early granulation tissue and rapid re‐epithelialization after MSC transplantation. Healing took between 1 and 5 months after MSC transplantation. Repair of burn wounds was associated with slight discoloration of the regenerated skin without hypertrophic scarring or contractures. The study results provide evidence of healing in deep‐ and full‐thickness burns by allogeneic MSC transplantation. Rapid recovery of burn patients after MSC transplantation improves their quality of life and reduces hospitalization length. Future studies incorporating a more significant number of patients may confirm the results obtained in this work.