Hair guideHair-Loss GlossaryImplanter pen (Choi pen)

Implanter pen (Choi pen)

Last updated: 2026-06-14

A pen-like tool used in DHI to implant grafts directly into the scalp, controlling depth, angle and direction in one step rather than making incisions first. It can allow dense, precise placement, but it is just an instrument — the result still depends on the surgeon's skill, not the device itself.

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Sources: AAD ↗

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Not medical advice. General education only; it does not replace diagnosis or treatment by a licensed professional. Consult a board-certified dermatologist before starting, stopping or changing any treatment.

⚠️ When to see a doctor — don’t self-treat

  • Sudden patchy or circular bald spots
  • Redness, scaling, pus, pain or itch (possible scarring alopecia — treat urgently)
  • Broken hairs or rapid loss
  • Loss with body-wide signs (weight loss, fatigue, cycle changes, acne, extra hair)
  • Loss right after a new medication
  • Any hair loss in a child
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