This handheld airbrush stem cell sprayer pen is used to selectively airbrush spray OR INJECT stem cells, other cells, and other ingredients onto (or into) injured human tissues, incubating cultured living tissues, and dissolvable 3D preprinted scaffolds for growing living tissues in thin film layers. This handheld airbrush stem cell sprayer pen (or injector) can be guided by a human hand. Several cooled reservoirs feeding the sprayer / injector pen are filled with autologous cells, mesenchymal stem cells, allogenic cells, dermal fibroblasts, xeogenic cells, syngeneic or isogenic cells, primary cells, secondary cells, adult and embryonic stem cells, tissue-matrix materials, biochemical growth factors, collogen, blood, multipotent , pluripotent, and totipotent stem cells.