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Dr. Pen M9 Replacement Cartridges
Dr. Pen M9 Replacement Cartridges
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M9 heads are made for the M9 handpiece and follow Dr. Pen's model-matched cartridge systems, so they will not fit another model's pen.
Four heads, and every one of them a wide one
An 18-pin head is the smallest that fits an M9. Everything in this range is built for coverage rather than for working to a single line, so the routine is short: one head for the face, one for larger zones, one for the widest passes, and one nano head to finish. Depth still comes from the pen — the head decides how much skin each pass covers.
| Head | Best for | Typical depth |
|---|---|---|
| 18-pin | The tight end of this range — whole-face passes, and the smaller zones you still need to cover properly | 0.25–1.0 mm |
| 36-pin | Neck, jawline, décolletage and body work — fewer passes across each zone | 0.5–1.5 mm |
| 42-pin | The widest head in this line — the fastest way across a large area | 0.5–1.5 mm |
| Round Nano | No-needle surface work — serum, under-eye, and the light finish at the end of a session | ≤ 0.25 mm — no needles |
Safe depth by concern is in our needle depth guide — at home, keep facial depth at or below 1.0 mm; above 1.5 mm is for trained practitioners.
Starting at 18-pin: what changes in a session
A range with no 12-pin runs differently, and it is not a compromise — it is a different way of covering ground. Fewer, denser heads mean more of the face is done in each pass, so a full session comes down in time and up in even coverage.
The M9 box, and your first reorder
- Two cartridges come with the M9. Two heads will not carry a face-and-scalp routine for long, so decide which pin count you are settling on and order that one in a set.
- One sterile blister per head, with manufacturing and expiry dates printed on it — see can you reuse Dr. Pen cartridges?
- A listing you can verify. We are an authorised Dr. Pen retailer and stock arrives through the official supply chain — how to verify your Dr. Pen.
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❓ Frequently Asked Questions
There is no 12-pin in the M9 range — what should I use instead?
The 18-pin. It is the smallest head made for an M9 and it covers a whole face without taking as long as a 12-pin would, because there are more needles in the same footprint. If what you wanted from a 12-pin was the very fine end for small zones, use the Round Nano on the surface instead, or work the 18-pin with shorter passes.
Is 18-pin the smallest head that fits an M9?
Yes. The complete list for this pen is 18, 36 and 42-pin plus Round Nano, and nothing smaller is made for it. If you already own a 12-pin pack from another Dr. Pen line, put it aside rather than trying to fit it — cartridge systems are matched to particular models, and forcing a head that does not want to seat is how the mount gets damaged.
The M9 ships with two cartridges — which ones do I reorder?
Whichever head you used most in your first sessions — but if you are ordering before you have run the pen, take the 18-pin. It is the head the face routine is built on here, and it is the one most owners come back for. Add the 36-pin if you also work the neck, jawline or body, and a Round Nano if you want a no-needle head for serum and upkeep.
Does the M9 induction base affect which cartridge I use?
No. The induction base is where the pen rests and charges between passes — it is a power feature, not a cartridge one. The cartridge mount is on the pen itself, so the head you fit is the same whether the pen is sitting on the base or in your hand.
What does the 42-pin do that the 36-pin does not?
It covers a wider strip in one pass, which matters over a large area and hardly matters on the face. Reach for the 42-pin on the body, or on the face when you want to cut the number of passes down; the 36-pin is the easier head to steer on the neck and jawline where the surface curves. Many owners keep both and use the wider one further back.
The M9 range has four heads — is that enough for a full routine?
For a face, neck and body routine, yes. Four heads is a wide grid, a wider grid, a very wide grid and a nano head — which is one head per job rather than one head per zone. The thing to watch is that you are not buying a density you will not use: if you only ever work the face and neck, the 18-pin and the Round Nano will carry nearly everything, and the 36-pin is the one to add first.
