Complete guide: PMU Limited RL Cartridge Tattoo Needles
Sterile, single-use cartridges with Round Liner needle configuration, specially designed for micropigmentation (PMU): eyebrows in hair stroke technique, permanent eyeliner, and lip contour. The stainless steel needles have an extra-polished finish to reduce trauma to facial skin, and the integrated safety membrane prevents liquid backflow into the pen. The PMU LIMITED series is for micropigmentation technicians and artists who offer PMU services and are looking for an affordable consumable with individual packaging and lot number traceability.
How to use
- Check the individual packaging before opening: the seal must be intact, and the lot number legible. A damaged blister means compromised sterility — do not use the cartridge.
- Prepare the workstation: sanitized hands, new examination gloves, protective barriers on the pen and on surfaces touched during the procedure.
- Open the sterile packaging in front of the client and mount the cartridge on your PMU or tattoo pen with standard cartridge grip, without touching the needle tip.
- Adjust the needle exposure on the pen to a small value — in PMU work is superficial; the product description indicates approximately 0.5–1.2 mm, depending on the area (eyebrows, lips, eyeliner).
- Set the power supply to a low voltage, specific to PMU procedures (approximately 4–7 V according to the description), and check the pen's operation before touching the skin.
- Take PMU pigment in single-use capsules and build the lines in short, controlled passes, gently wiping away excess pigment.
- If the tip degrades during the session or you move to a different work area, replace the cartridge with a new one from sealed packaging.
- At the end, immediately dispose of the cartridge in the sharps container, remove the barriers, and disinfect the pen according to the manufacturer's instructions.
Tips from us
- Choose the configuration according to the procedure: the range covers fine variants from 1RL to 5RL — according to the description, 1RL and 3RL are most used for hair strokes on eyebrows, and 3RL and 5RL for lip contour.
- Plan 2–3 cartridges for an eyebrow session and always keep at least one spare, so you are not caught out if a tip degrades.
- Use pigments formulated specifically for PMU, not regular tattoo ink — the different composition of tattoo ink can cause unpredictable migration on the face.
- Record the cartridge lot number in the client's file: the product is traceable, and lot tracking is a good professional practice in PMU.
- Test the needle exposure on a test surface (e.g., on a glove) before first skin contact to confirm the correct setting.
- Store the cartridges in their original packaging, in a dry, clean place, away from moisture and sources of contamination.
Warning: Strictly single-use product: never reuse a cartridge, not even on the same client in different sessions, and do not attempt to re-sterilize it. Cartridges are sterilized with ethylene oxide and individually packaged — use only with seal intact. You work on the face, near eyes and mucous membranes, so hygiene discipline is critical: gloves, protective barriers, disinfected surfaces, and disposal of used cartridge in sharps container. The safety membrane in the cartridge reduces the risk of pen contamination, but does not replace disinfecting it after each client. Micropigmentation procedures should only be performed by trained individuals, in compliance with current health regulations.
Frequently asked questions
What pens are these cartridges compatible with?▾
PMU Limited RL cartridges have standard cartridge grip, so they work with both dedicated PMU pens and standard tattoo pens that accept cartridges. It is important that your pen allows fine adjustment of needle exposure, because in PMU you work with superficial penetration and need precise control.
How are they different from regular tattoo RL needles?▾
They are optimized for facial skin: the needle finish is extra polished to minimize trauma, and the configuration range is fine, from 1RL to 5RL, calibrated for delicate lines and superficial penetration. For body tattoos, where you need more varied configurations and deeper penetration, a standard range of RL cartridges is more suitable.
Which configuration do I choose for eyebrows and which for lips?▾
According to the product description recommendations, 1RL and 3RL are most used for hair strokes on eyebrows, where line fineness matters, and 3RL and 5RL are preferred for lip contour, where you want a slightly more consistent line. For eyeliner, fine configurations are generally used. The final choice depends on your technique and desired result.
Can I reuse a cartridge if I only used it for a few minutes?▾
No, under no circumstances. The cartridge is a single-use device: once removed from sterile packaging and used, it must be disposed of in the sharps container at the end of the procedure. Reuse, even on the same client, poses a contamination risk — even more serious in PMU, where you work near eyes and mucous membranes.
How can I tell if a cartridge is sterile and safe to use?▾
Each cartridge is individually packaged and sterilized with ethylene oxide, traceable via the lot number on the packaging. Before use, check the blister seal: if it is broken, swollen, or damaged, sterility is no longer guaranteed and the cartridge must be discarded. Open the packaging only at the moment of the procedure, in front of the client.
Can I do body tattoos with these cartridges?▾
Technically they mount on any pen with standard cartridge grip, but it is not the recommended use. The fine range 1RL–5RL is designed for superficial work on facial skin. For body tattoos, which require deeper penetration and a wider range of configurations, choose a series of RL cartridges intended for classic tattooing from the 'Tattoo Needles' category.
Product description
PMU Limited RL (Round Liner) cartridge needles are specialized needles for permanent micropigmentation (PMU) procedures, designed with the precision required for facial work — eyebrows, lip liner, and eyeliner. The Round Liner configuration arranges needles in an ultra-tight circular formation, optimized for fine lines and precise details on delicate facial skin. The needles are manufactured from high-quality stainless steel with an extra-polished finish to minimize trauma to facial skin, which is significantly more sensitive than body skin. The integrated safety membrane is essential in PMU, where contamination risk must be completely eliminated — procedures take place on the face, near eyes and mucous membranes. Ethylene oxide sterilization and individual packaging guarantee absolute safety. Compatible with PMU pen machines and standard tattoo pens with cartridge grip. The PMU Limited series offers accessibility without safety compromises for PMU technicians and artists offering micropigmentation services. Available in fine configurations from 1RL to 5RL, optimized for the precision needed in high-quality PMU procedures. The PMU Limited series is manufactured with particular attention to the specific requirements of facial micropigmentation — the needle finish is additionally polished to minimize micro-imperfections that cause discomfort on sensitive facial skin. Each cartridge complies with European regulations regarding single-use medical devices and is fully traceable through the batch number. Certified PMU technicians particularly appreciate the Limited series' consistency, which allows them to focus on technique without surprises caused by needle variability.
Frequently Asked Questions What makes PMU Limited RL needles different from standard RL tattoo needles? PMU Limited RL needles are specifically optimized for facial skin: the finish is extra-polished for minimal trauma, configurations are finer (1RL-5RL), and geometry is calibrated for superficial penetration into the facial dermis. Facial skin is 3-4 times thinner than body skin, requiring needles with adapted specifications. What PMU procedures can I perform with PMU Limited RL? With PMU Limited RL you can perform: eyebrow hair strokes (machine microblading), permanent eyeliner, lip liner, beauty marks, linear scalp micropigmentation, and corrections of previous PMU. 1RL and 3RL configurations are most used for hair strokes, while 3RL and 5RL are for lip liner. Is PMU Limited RL compatible with common PMU pen machines? Yes, PMU Limited RL is compatible with all PMU and tattoo pens that accept standard cartridges. It works with PMU pens like Biotek, Cheyenne Sol Nova, Glovcon, Kwadron PMU, and any other pen with standard cartridge grip. Ensure the pen allows precise needle exposure adjustment for PMU work. What penetration depth do you recommend for PMU with Limited RL? For PMU procedures with Limited RL, penetration depth should be between 0.5-1.2mm — significantly less than for body tattoos. Eyebrows require 0.5-0.8mm, lip liner 0.8-1.0mm, and eyeliner 0.6-0.8mm. Excessive penetration causes pigment migration and scarring on sensitive facial skin. What pigments work best with PMU Limited RL? PMU Limited RL works optimally with professional PMU pigments like Permablend, Li Pigments, Bio Touch, Phi Contour, or Tina Davies. These pigments are specifically formulated for facial skin with fine granulometry. Do not use regular tattoo ink for PMU — it has a different composition and can cause unpredictable migration on the face. How many PMU Limited RL cartridges do I need for an eyebrow session? For a complete PMU eyebrow session, plan for 2-3 PMU Limited RL cartridges. One cartridge is usually sufficient per eyebrow, but change it for each new brow for optimal performance. Always have a spare cartridge in case of imperfection or sharpness loss. Never reuse cartridges between clients. Can PMU Limited RL be used for body tattoos? Technically yes, but it is not recommended. PMU Limited RL has fine configurations (1RL-5RL) optimized for superficial penetration on facial skin. For body tattoos, where deeper penetration and more varied configurations are needed, use the standard Limited RL or Kwadron RL range covering the full range from 1RL to 14RL. What voltage do you recommend for PMU with Limited RL? For PMU with Limited RL, recommended voltage is between 4-7V — significantly lower than for body tattoos. Eyebrow hair strokes require 4-5.5V, lip liner 5-6.5V, and eyeliner 4.5-6V. Voltage should be adjusted based on the client's skin sensitivity and the visible skin response to the procedure. What is the lifespan of a PMU Limited RL cartridge in a session? A PMU Limited RL cartridge maintains optimal performance for approximately 30-60 minutes of continuous facial work. Facial skin is more delicate and needles lose sharpness faster due to contact with topical anesthesia products frequently used in PMU. Change the cartridge immediately when you notice a decrease in effectiveness. Does PMU Limited RL require special certifications for use? PMU Limited RL cartridges are certified for professional use according to European standards. However, practicing PMU requires separate professional certification of the technician — accredited micropigmentation course, hygiene and public health, and registration with local health authorities. The cartridge is an instrument; the certification is the operator's.
