Dr.pen® Bio 4
Dr.pen® Bio 4

A REFINED RITUAL —
DUAL HEADS,
FULL COVERAGE

A REFINED RITUAL —
DUAL HEADS,
FULL COVERAGE

Wide Reach, Precise Touch

Wide Reach, Precise Touch

Bio 4 pairs two interchangeable microneedle heads in one handpiece—120 pins for sweeping passes over larger zones and 64 pins for focused work along parts, hairlines and localized thinning. Adjustable depth from 0–3.0 mm lets you tune intensity by area, while dense, even needle layouts create repeatable micro-channels to carry targeted serums more efficiently than surface application alone. Quick head changes and single-use sterile cartridges keep each session streamlined and hygienic from start to finish.

Bio 4 pairs two interchangeable microneedle heads in one handpiece—120 pins for sweeping passes over larger zones and 64 pins for focused work along parts, hairlines and localized thinning. Adjustable depth from 0–3.0 mm lets you tune intensity by area, while dense, even needle layouts create repeatable micro-channels to carry targeted serums more efficiently than surface application alone. Quick head changes and single-use sterile cartridges keep each session streamlined and hygienic from start to finish.

Dual Heads, Tunable Depth

Dual Heads, Tunable Depth

Two interchangeable heads and adjustable needle depth work together to cover wide thinning zones and focused areas with steady, controlled passes.

120+64 Needle Switching
120+64 Needle Switching

Easily switch between a 120-pin head for fast, large-area passes and a 64-pin head for focused work along parts, hairlines and localized thinning.

0–3.0 mm Adjustable Depth
0–3.0 mm Adjustable Depth

A clear depth dial from 0–3.0 mm lets you match needle length to different areas, helping keep treatments effective yet comfortable and consistent.

Protected, Single-Use Heads
Protected, Single-Use Heads

Each head is supplied in medical blister packaging with a safety cap, helping maintain sterility before use and reducing accidental contact between sessions.

USE & CARE

USE & CARE

Plan each session by zones, pairing the 120-pin head with broad thinning areas and the 64-pin head with targeted spots. Start with shorter needle depths and light, even passes, then adjust only as comfort allows.

PREP & MAP AREAS

Cleanse and dry the scalp, then identify large thinning zones and smaller, localized concerns. Choose a conservative depth setting to begin.

120-PIN FOR LARGE ZONES

Fit the 120-pin head and work over wide areas with smooth, overlapping passes. Keep your strokes steady to create an even grid of micro-channels.

64-PIN TARGETED CARE

Switch to the 64-pin head for hairlines, parts and small patches. Use shorter, precise passes to focus care where density loss is most visible.

FINISH & AFTERCARE

Once zones are treated, wipe away residue, discard the used head and wipe the handpiece, then apply your chosen topical care.

From Surface to Follicle Reach

From Surface to Follicle Reach

A three-step view of how microneedling moves hair essences from surface coating to targeted delivery around the follicles.

STEP

STEP

1

SURFACE COATING

SURFACE COATING

Applied on its own, most essence stays on the scalp surface, with limited access to the follicle area underneath.

STEP

STEP

2

MICROCHANNEL PASSES

MICROCHANNEL PASSES

Microneedle passes open uniform microchannels through the barrier layer, carrying essence down along each needle path.

STEP

STEP

3

FOLLICLE ZONE COVERAGE

FOLLICLE ZONE COVERAGE

Essence settles around the follicle roots, helping create a more supportive environment for scalp and density, as shown in the before-and-after coverage results.

Before & After

Before & After

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LEARN HOW YOU CAN YOUR PRACTICE

LEARN HOW YOU CAN YOUR PRACTICE

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Get Your Quote or Call: +86-757-86684133

Get Your Quote or Call: +86-757-86684133