CO2 Fractional Laser Er YAG 4D Machine for Scar Removal & Vaginal Tightening | ZENI

Wrinkle Removal & Skin Resurfacing

CO₂ fractional resurfacing improves skin texture, fine lines, sun damage and pore size. The laser creates microscopic thermal treatment zones in the dermis while preserving surrounding healthy tissue for faster healing. Er:YAG can be used for gentler surface rejuvenation when less aggressive treatment is indicated.

Scar & Stretch Mark Removal

CO₂ laser addresses atrophic acne scars, surgical scars and striae distensae. The ablative and thermal effects break down fibrotic scar tissue while stimulating new collagen deposition. Multiple sessions are typically required, with improvement rather than complete removal as the realistic goal. Published clinical research supports fractional CO₂ laser as an effective treatment for striae in various skin types.

Vaginal Tightening & Rejuvenation

The 360° vaginal probe delivers controlled laser energy to the vaginal mucosa, promoting collagen remodeling for tightening and rejuvenation. This addresses vaginal laxity, dryness and mild stress urinary incontinence. The Er:YAG component offers a gentler, non-ablative option for mucosal treatment, while CO₂ provides deeper tissue remodeling when clinically appropriate. Treatment protocols should follow manufacturer guidelines and local regulations.

CO₂ Ablative Mode

CO₂ laser emits at 10,600nm, strongly absorbed by water. It vaporizes thin layers of epidermis and creates controlled thermal damage in the dermis, triggering collagen denaturation and neocollagenesis. Fractional mode splits the beam into microbeams, preserving healthy tissue bridges for faster recovery.

Er:YAG Non-Ablative Mode

Er:YAG laser emits at 2,940nm with even higher water absorption, resulting in shallower penetration and more superficial thermal effects. This makes it suitable for gentle mucosal tightening, surface rejuvenation and non-ablative collagen stimulation with minimal downtime.

Hybrid Treatment Approach

The dual-wavelength platform allows practitioners to combine CO₂ and Er:YAG in a single session, tailoring treatment depth and intensity to each client’s needs. The 360° vaginal probe ensures even circumferential delivery across the vaginal wall for consistent results. Learn more about fractional laser technology for clinical background.

Power, pulse duration, spot size, scan area, treatment modes, screen size and dimensions should be confirmed in the model-specific specification sheet. Industry-typical hybrid CO₂ + Er:YAG specifications include 30–70W CO₂ power, 0.1ms–5,000μs pulse duration and 20×20mm maximum scan area.

What does “Er YAG 4D” mean on this machine?

“Er YAG 4D” refers to the combination of Er:YAG (2,940nm) laser technology with 4-dimensional treatment capability, which in this context covers fractional CO₂ resurfacing, Er:YAG non-ablative heating, vaginal tightening and skin rejuvenation. The “4D” designation is a marketing label that varies between manufacturers; the specific treatment modes and probe configuration should be confirmed in the model-specific specification sheet.

What is the difference between CO₂ and Er:YAG laser?

CO₂ laser (10,600nm) is ablative — it vaporizes tissue and creates deep thermal damage, making it effective for scar revision, deep wrinkles and stretch marks. Er:YAG laser (2,940nm) is non-ablative or minimally ablative — it provides superficial heating for gentle tightening and surface rejuvenation with less downtime. The hybrid platform allows both to be used in one session.

Is fractional CO₂ laser treatment painful?

Topical anesthesia is typically applied before treatment. Most patients describe a warm, prickling sensation. Discomfort varies by treatment depth, energy setting and individual sensitivity. Vaginal treatments generally involve less discomfort than facial resurfacing.

How is this different from ZENI’s standard CO₂ laser machines?

ZENI’s standard 3-in-1 and portable CO₂ lasers use CO₂ wavelength only. This Er YAG 4D model adds Er:YAG (2,940nm) non-ablative capability, enabling gentler mucosal treatment and layered skin rejuvenation. It also carries an extended 2+5 year warranty versus the standard 2-year coverage.

What should I request with the quotation?

Ask for the model-specific specification sheet covering CO₂ power, Er:YAG power, pulse duration, spot size, scan area, treatment modes, vaginal probe specifications, screen size, dimensions and cooling requirements. Confirm which treatment heads and probes are included.