If you searched “dr pen which cartridge to use,” start with the exact model of your pen, then consider the treatment area. A cartridge’s pin count alone does not tell you whether it fits your device, suits your skin or supports your intended treatment.
Facial texture, scalp concerns and body scars require different assessments. This guide explains how to compare cartridge listings and avoid buying the wrong replacement. It is a purchasing guide, not a home-treatment protocol: skin-penetrating microneedling carries risks and should be assessed and performed by a qualified healthcare professional.
Quick answer: choose by model, then treatment area
There is no universal “face,” “scalp” or “body” cartridge that fits every Dr. Pen. Confirm model compatibility before comparing needle configurations.
| Treatment area | What to look for when shopping | What not to assume |
|---|---|---|
| Face | A facial cartridge or combo pack explicitly listed for your model | A lower pin count automatically means a gentler treatment |
| Scalp | A compatible cartridge specified by the clinician managing your hair-loss treatment | A beard-growth label proves suitability or effectiveness for scalp hair loss |
| Body | A model-compatible body cartridge or combo pack that matches the clinician’s plan | Thicker-looking skin always requires deeper treatment |
| Superficial cosmetic care | A compatible nano tip, where supported by the device instructions | Nano tips are interchangeable with penetrating needle cartridges |
A treatment-area label helps organize products, but it is not a substitute for compatibility information or a clinical assessment. Needle count, cartridge design and the intended procedure all matter.
How to answer “dr pen which cartridge to use”: check compatibility first
Match the full model name
Read the model name on the device and compare it with the cartridge listing. Similar names are not sufficient: treat M8 and M8S as separate cartridge platforms unless the manufacturer explicitly confirms compatibility.
The same principle applies when comparing A20, A8S or Hydra Pen models. A cartridge that resembles another model’s replacement may still have a different attachment, housing or operating requirements. Do not force a cartridge into place or modify it to fit.
For M8S owners, the guide to Dr. Pen M8S cartridge compatibility and pin options provides a more focused reference before you choose a treatment-area pack.
Check the listing, not just the photograph
Before ordering, verify three details: the named compatible device, the cartridge configuration and the pack contents. A product photo may show several options, while the selected variant contains only one type.
Choosing which cartridge to use with your Dr. Pen starts with this compatibility check. If the listing does not clearly identify your model, ask the seller to confirm before purchasing. Neither a familiar color nor a matching pin count establishes that a cartridge belongs to your device.
Which cartridge should you consider for the face?
Facial cartridge selection depends on the concern being assessed and the specific area being treated. Broad cheek areas, narrow contours and individual scars present different practical challenges. Active acne, irritated skin or an undiagnosed lesion should not be treated simply because a pack is labeled for facial use.
For M8S owners comparing facial options, the Dr. Pen M8S Face Combo Cartridges (5-pack) includes 12-pin and 18-pin microneedling options. The pack is marketed for facial concerns such as signs of aging, scars, pigmentation and sun damage. Those descriptions identify the product’s intended focus; they do not guarantee results or establish that every listed concern is suitable for microneedling.
Pin count does not set penetration depth. A 12-pin cartridge is not automatically shallow, and an 18-pin cartridge is not automatically more intensive. Device settings, technique, cartridge construction and skin condition also affect the procedure.
When deciding which cartridge to use with your Dr. Pen for facial treatment, ask the practitioner to specify the compatible configuration rather than choosing by a “more needles must be better” rule. Pigmentation concerns deserve particular caution because inflammation can worsen discoloration in susceptible skin.
Beard-area packs are a separate category
The Dr. Pen M8S Beard Growth Cartridges Combo (5-pack) is marketed for beard concerns and describes a 36-pin microneedling option. It is relevant when comparing M8S products intended for the beard area, rather than general facial texture.
However, a beard-growth product name does not prove that microneedling will fill patchy areas. It also does not make the pack a scalp recommendation. Unexplained patchiness, inflamed follicles or sudden hair loss warrants assessment before selecting a cartridge.
Which cartridge should you use for the scalp?
There is no responsible universal pin-count recommendation for scalp hair loss. The cause of the loss matters more than the cartridge label: pattern hair loss, inflammatory scalp conditions and scarring disorders require different management.
The FDA’s guidance on microneedling devices states that it has not cleared microneedling devices for hair loss or for use with another product. Clearance associated with a particular device should not be interpreted as approval for every treatment area or combination treatment.
A clinician may consider an off-label procedure, but that is a medical decision. If scalp microneedling is part of a professionally supervised plan, the clinician should identify the cartridge compatible with the device and appropriate for that procedure.
For scalp concerns, deciding which cartridge to use with your Dr. Pen therefore comes after diagnosis and treatment planning, not before. Do not choose a higher pin count to cover more hair-bearing skin or use microneedling to push minoxidil, cosmetic serums or other products into the skin on your own.
Which cartridge should you consider for the body?
Body treatment covers very different situations, from a small surgical scar to a larger area of uneven texture. A broad treatment area does not automatically require the cartridge with the highest needle count, and a visible scar does not establish that it is suitable for microneedling.
M8S owners can compare the Dr. Pen M8S Body Combo Cartridges (5-pack) when shopping for a body-focused replacement pack. Check the current listing for its configurations and exact contents before ordering. A “body combo” label identifies the shopping category, not a universal treatment prescription.
The practitioner should assess the location, condition of the skin and type of concern. Avoid treating open wounds, infection, suspicious lesions or areas that have not fully healed. A history of keloids, poor wound healing or medications that affect bleeding also needs discussion before treatment.
To determine which cartridge to use with your Dr. Pen on the body, separate two decisions: which replacement fits the pen and whether the proposed procedure is appropriate. Purchasing the correct cartridge answers only the first question. It does not establish suitable depth, speed, pressure or treatment frequency.
Needle cartridges versus nano tips
Needle cartridges and nano tips are not equivalent replacements. Needle cartridges contain needles intended to penetrate skin. Nano tips generally use very small projections for superficial cosmetic use, although their construction and permitted use vary by product.
Do not assume that a nano tip can reproduce a procedure intended to address scars or deeper skin changes. Likewise, a penetrating needle cartridge should not be treated as a way to apply an everyday skincare serum.
The distinction matters when comparing bundles: a pack containing both types offers different cartridge categories, not several interchangeable versions of one treatment. Verify the model compatibility and follow the instructions for the specific tip.
When choosing which cartridge to use with your Dr. Pen, first establish whether the planned procedure calls for a needle cartridge or a superficial tip. Only then compare the available configurations. Avoid listings that blur this distinction or imply that every tip delivers the same benefits.
Check sterility, authenticity and storage before use
A compatible cartridge can still be unsuitable if its sterile barrier is damaged. Check the individual packaging, labeling and expiry information where supplied. Do not use a cartridge from a torn pouch or one whose storage history is uncertain.
Penetrating needle cartridges are single-use items. Use a new cartridge for each treatment session, including repeat sessions on the same person. Cleaning, soaking or wiping a used cartridge does not restore its original sterile condition. Never share cartridges, and arrange appropriate sharps disposal through the treating professional or local guidance.
For authenticity, look for clear manufacturer identification and use the verification method supplied with the product, if available. A printed logo alone is not proof of authenticity. Keep the packaging and order details so that the seller can investigate compatibility or product questions.
In clinics, store unopened supplies in a clean, dry area according to their labeling and limit access to treatment stock. Premises measures such as business access control and alarm systems can help protect equipment and inventory, but they do not replace sterile packaging or infection-control procedures.
Knowing which cartridge to use with your Dr. Pen includes knowing when not to use one: uncertain compatibility, compromised packaging or unclear product identity are reasons to stop and seek clarification.
Frequently asked questions
Is a 36-pin cartridge better than a 12-pin cartridge? Not universally. The numbers describe needle count, not guaranteed effectiveness, depth or comfort. The appropriate choice depends on the compatible device, cartridge design and professionally assessed procedure.
Can I use the same cartridge on my face and scalp? Do not reuse a cartridge from one treatment session for another. Within a professionally managed procedure, cartridge changes between areas should follow the practitioner’s infection-control protocol and the device instructions.
Can M8 cartridges be used with an M8S pen? Do not assume compatibility because the model names are similar. Buy cartridges explicitly listed for your exact model, or obtain manufacturer confirmation before using another platform’s replacement.
Does a beard-growth cartridge work for scalp hair loss? A beard-focused product label does not establish scalp suitability or hair-growth effectiveness. Scalp hair loss needs a diagnosis, and any microneedling proposal should be discussed with a qualified clinician.
Does FDA clearance cover every cartridge and treatment area? No. Device clearance relates to a specific device and its cleared indications. It should not be extended to every replacement cartridge, cosmetic claim or off-label procedure.
Choose the right replacement before ordering
Use a simple purchasing sequence: confirm your exact pen model, establish the intended cartridge type with your practitioner and check the selected pack’s contents and sealed packaging.
If you are still unsure which cartridge to use with your Dr. Pen, contact Dr. Pen Store with the model name and the product you are considering. Ask for compatibility confirmation before ordering, and keep clinical treatment decisions with a qualified healthcare professional.
