Can regenerative therapy technology be used on face skin tissue?

From hearsay, I've heard of a person with the tip of a finger sliced off, who was was recommended to see a researcher, who sprinkled some powder on the wound that allowed the fingertip to grow back. I wonder if that powder is the same thing inside over-the-counter scarless acne/cut powder. Perhaps someone more knowledgeable on these matters can comment on these, to tell me whether or not what I've heard really exists or if there is research being done or have been done and if the technology can be applied to faces.

Health, Beauty & Fitness
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