HaloCalm Cartridge Comparison

Which HaloCalm Cartridge Is Right for You?

The right HaloCalm cartridge depends on your treatment goal, treatment area and preferred level of intensity. Use this guide to compare Round Nano, 3D Silicon Nano, 5D Silicon Nano and 16–42 pin microneedling cartridges.

Before ordering, check your device connection:

• NK2 PRO: two-tab bayonet connection
• NL1 PRO: screw-style connection

These connections are not interchangeable. Never force a cartridge that does not attach securely.

Quick Cartridge Comparison

Understanding HaloCalm Nano Cartridges

Round Nano, 3D Silicon Nano and 5D Silicon Nano cartridges are designed for surface-level nano-infusion rather than deeper microneedling.

The terms “3D” and “5D” describe different silicon contact-surface designs. They do not represent needle length, penetration depth or treatment strength.

3D Silicon Nano: Precise Nano-Infusion

The 3D Silicon Nano Cartridge has a relatively compact contact area, making it easier to follow smaller facial contours.

Choose 3D Silicon Nano for:

• Eye-area skincare
• Lip contours and lip lines
• Small or difficult-to-reach areas
• Targeted hydration
• Precise serum application
• Thin or sensitive-looking skin
• Gentle maintenance between microneedling sessions

Best choice if: you want precise control around the eyes, lips or another small area.

Avoid direct use on the eyelids, lash line or broken skin.

5D Silicon Nano: Full-Face Nano Care

The 5D Silicon Nano Cartridge has a larger contact surface than the 3D option, allowing it to cover broader facial areas more efficiently.

Choose 5D Silicon Nano for:

• Full-face nano-infusion
• Cheeks and forehead
• Hydration and radiance
• Uneven-looking tone
• The appearance of fine lines
• Gentle surface exfoliation
• Larger areas of thin or sensitive-looking skin

Best choice if: you want the gentle feel of a silicon nano cartridge with more efficient full-face coverage.

Round Nano: Everyday Hydration and Glow

The Round Nano Cartridge is a versatile option for general nano-needling and topical product delivery. Its shape moves easily across both facial contours and broader areas.

Choose Round Nano for:

• Up to 97% more product absorption*
• Hydration
• Dull-looking skin
• A fresh, radiant appearance
• Uneven-looking tone
• Fine-line care
• Gentle weekly skincare
• Zero downtime*

Best choice if: your main goal is enhanced serum absorption and an easy, general-purpose nano routine.

16–42 Pin Cartridges: Same Coverage, Different Needle Counts

All 16–42 pin cartridges are designed with a similar contact surface area. The difference lies in the number of needles, which affects treatment density, intensity and skin response—not the size of the area covered.

16-Pin Cartridge: Balanced Full-Face Care

The 16-pin cartridge offers a balance of precision, coverage and comfort.

Choose 16-pin for:

• General facial rejuvenation
• Fine lines
• Mild post-acne marks
• Enlarged-looking pores
• Uneven tone
• Rough or dull-looking texture

Best choice if: you want one versatile cartridge for a general facial routine.

24-Pin Cartridge: Wider Treatment Density

The 24-pin cartridge increases needle density while maintaining the same coverage area.

Choose 24-pin for:

• Broader post-acne scarring
• Visible pores
• Uneven texture
• Stretch marks
• Neck and body areas
• General firming routines
• Smaller scalp sections

Best choice if: you want more intensive treatment within the same coverage area as a 16-pin cartridge.

36-Pin Cartridge: Higher Density for Even Distribution

The 36-pin design further increases needle density, allowing more uniform stimulation across the same surface area.

Choose 36-pin for:

• Scalp routines intended to promote hair growth*
• Neck and décolletage
• Larger facial or body areas
• Fine lines
• Mild post-acne marks
• Uneven tone and texture

Best choice if: you want more even distribution and gentler-feeling passes within the same coverage area.

42-Pin Cartridge: Maximum Density, Same Coverage

The 42-pin cartridge provides the highest needle density while maintaining the same coverage area as other pin cartridges.

Choose 42-pin for:

• Large treatment areas
• Fine lines and visible signs of ageing
• Overall skin texture
• Enlarged-looking pores
• Mild post-acne marks
• Skin-firming routines
• Scalp and body coverage

Best choice if: you want the most even, dense treatment within the same coverage area.

Choose by Your Main Goal

For “Acne Removal”

Choose 16-pin or 24-pin when uneven texture covers a broader area.

Here, “acne removal” refers to reducing the appearance of post-acne marks and acne scarring. Never use a cartridge on active, inflamed or cystic acne.

For Hair Growth

Choose 36-pin or 42-pin for broad, even scalp coverage. A 24-pin cartridge offers more control around smaller hairline sections.

Microneedling should not be presented as a treatment for alopecia or medical hair-loss conditions.

For 97% More Product Absorption

Choose Round Nano for general serum application.

Choose 3D Silicon Nano for precise eye-area and lip-area application.

Choose 5D Silicon Nano for broader, full-face serum infusion.

Only use simple, skin-compatible products specifically suitable for nano-needling.

For Zero Downtime

Choose Round Nano, 3D Silicon Nano or 5D Silicon Nano at an appropriate setting.

Traditional 16–42 pin microneedling cartridges can cause temporary redness, sensitivity or dryness and should not be promoted as zero-downtime treatments.

For Sensitive or First-Time Users

Start with:

1. 3D Silicon Nano for small areas
2. 5D Silicon Nano for full-face care
3. Round Nano for versatile, broader application

For Fine Lines

Choose 3D Silicon Nano around small facial contours, 5D or Round Nano for gentle full-face care, or 16–42 pin cartridges for more intensive routines.

For Stretch Marks and Body Areas

Choose 24-pin, 36-pin or 42-pin depending on the size of the area.

Cartridge Safety

• Use a new, individually sealed cartridge for every session.
• Never share or reuse cartridges.
• Confirm whether your device requires NK2 PRO or NL1 PRO.
• Do not force an incompatible connection.
• Do not use damaged or bent cartridges.
• Do not use on active acne, open wounds, infections or irritated skin.
• Stop if unusual pain, bleeding or persistent irritation occurs.
• Follow the instructions supplied with your exact HaloCalm device.
• Seek professional guidance for intensive settings, scalp use or body treatments.

The Simple Answer

Choose 3D Silicon Nano for small, delicate areas such as the eye and lip contours.

Choose 5D Silicon Nano for gentle full-face nano-infusion.

Choose Round Nano for general hydration, glow and enhanced product absorption.

Choose 16-pin for balanced full-face rejuvenation.

Choose 24-pin for more intensive treatment within the same coverage area.

Choose 36-pin or 42-pin for higher-density, even treatment across the same coverage area.

There is no single best HaloCalm cartridge. The right choice is the cartridge that fits your device connection, treatment area and skincare goal.