Ultrasound device

Penta

A New Standard in Beauty Devices Beyond Conventional Limits The World's First Titanium 5-Level Alternating Ultrasound Device Featuring 25 MHz

Point 1

Patented Q-Mode More Powerful 5-Level Alternating Ultrasound
from 1 to 25 MHz

Using the same frequency as professional
skin clinics

Point 2

Premium Titanium Head
Optimized Ultrasound Energy Delivery

Point 3

Clinically Proven
5-Dimensional Skin DensityImprovement

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The World's First Titanium
5-Level Alternating Ultrasound Device

The World's First Titanium
5-Level Alternating Ultrasound Device

The world's first beauty device featuring 5-level alternating ultrasound with a titanium head.
Five ultrasound frequencies work simultaneously across five different skin layers,
delivering firm, dense-looking skin from the surface down

The world’s first and the only device in Korea
with these high performance ultrasound specifications.
Equipped with 19 MHz, the same frequency used in professional clinics, and a titanium massage head, it transmits ultrasound deeper and closer for more noticeable skin improvements.

Blue 3D Abstract

Patented Q-Mode More Powerful with Five-Way Cross Ultrasound

Patented Q-Mode More Powerful with Five-Way Cross Ultrasound

Unlike conventional sequential frequencies, Quadthera's patented Q-Mode arranges ultrasound frequencies according to the skin's structure. Its interval-inspired cross-frequency sequence creates denser, more intensive skin care.

Unlike conventional sequential frequencies, Quadthera's patented Q-Mode arranges ultrasound frequencies according to the skin's structure. Its interval-inspired cross-frequency sequence creates denser, more intensive skin care.

Core Cellular Care

Since approximately 70% of cells consist of water, stronger ultrasound stimulation activates skin cells, promotes Heat Shock Protein (HSP) production, and helps improve overall skin condition.

Since 70% of a cell is composed of water, the stronger the ultrasound frequency shakes the cell, the more the skin is activated, promoting heat shock protein generation and improving skin condition.

5-Level Alternating Ultrasound That Awakens Skin Cells

Beginning with 1 MHz for deeper penetration, followed by 19 MHz and 25 MHz to stimulate the epidermis, then 3 MHz for deeper layers, and 10 MHz for the mid-layer, the five frequencies massage each skin layer to awaken dormant skin cells.

*Patent application No.: 10-2025-0035411
Patented technology generating multiple ultrasound frequencies to enhance both ingredient absorption and skin elasticity.

*Patent application No.: 10-2025-0035411
Patented multifrequency ultrasound technology designed to maximize absorption and improve skin elasticity.

*Patent application No.: 10-2025-0035411
Patented multifrequency ultrasound technology designed to maximize absorption and improve skin elasticity.

Technology Begins at the Head
Premium Titanium Head

Technology Begins at the Head
Premium Titanium Head

Even the most advanced frequencies cannot perform at their full potential without a precisely engineered treatment head. Quadthera Penta features a premium titanium head with excellent energy conductivity, delivering ultrasound vibrations consistently and efficiently to the skin.

Even the most advanced frequencies cannot perform at their full potential without a precisely engineered treatment head. Quadthera Penta features a premium titanium head with excellent energy conductivity, delivering ultrasound vibrations consistently and efficiently to the skin.

Blue 3D Abstract

Stable Ultrasound Energy Output

Titanium minimizes ultrasound energy loss and helps deliver ultrasound more consistently to the skin.

Skin-Friendly Biocompatibility

Titanium is widely used in artificial bones and medical implants due to its outstanding biocompatibility,
making it gentle even for sensitive skin.

Cavitation is the effect where microbubbles generated by pressure changes in the skin’s fluids burst, briefly widening the gaps between cells.

*Patent registration No.: 10-2420176
A patented technology that uses multifrequency ultrasound with 1 MHz to boost both absorption and skin elasticity.

5-Level Alternating Ultrasound
Improves Skin Density

5-Level Alternating Ultrasound
Improves Skin Density

Five ultrasound frequencies work together to improve overall skin density—including skin texture, compactness, and firmness—for visible improvements from within.

Five ultrasound frequencies work together to improve overall skin density—including skin texture, compactness, and firmness—for visible improvements from within.

Blue 3D Abstract

Clinical Results Have Confirmed Its Efficacy
Skin Texture Density ¹


Clinical Results Have Confirmed Its Efficacy
Skin Texture Density ¹


Immediate Improvement 20%
After 4 Weeks 33%

Immediate Improvement 20%
After 4 Weeks 33%

Blue 3D Abstract

Before

Mobile View

After

1) P&K Skin Research Center, from April 15 to 18, female adult aged 20-59, comparison of combined use of ampoule device for mode 1
2-3) P&K Skin Research Center, from April 15 to 18, female adult aged 20-59, comparison of ampoule standalone versus combined use with device, results may vary depending on indivisual skin conditions and usage environments.

Skin Compactness ²

Skin Compactness ²

After 4 Weeks 16.9% Improvement

After 4 Weeks 16.9% Improvement

Blue 3D Abstract

Before

Mobile View

After

FORHERTZ 3D Booster Mask Gel standalone

FORHERTZ 3D Booster Mask Gel standalone

Penta + FORHERTZ 3D Booster Mask Gel combined use

Penta + FORHERTZ 3D Booster Mask Gel combined use

Moisture Density ³
Triple-Layer Hydration


Moisture Density ³
Triple-Layer Hydration


Deep 0.5mm

Skin Deep 0.5mm

13.9% improvement

13.9% improvement

36.04

41.06

Skin Depth 1.5mm

Skin Depth 1.5mm

12.4% improvement

12.4% improvement

42.56

47.87

Skin Depth 2.5mm

Skin Depth 2.5mm

11.1% improvement

11.1% improvement

35.92

39.91

P&K Skin Research Center, from April 16 to May 15, female adult aged 20-59, comparison of gel standalone versus combined use with device for mode Q, results may vary depending on indivisual skin conditions and usage environments.

Right (0°): 192.9% Improvement
Left (0°): 156.3% Improvement

3D Skin Radiance ⁶

Blue 3D Abstract

Right

Mobile View

Left

3D 입체 광채 효과 개선 156%

Temperature Reduced by 10.1°C

Skin Cooling ⁸

Blue 3D Abstract
Blue 3D Abstract

Before

Mobile View
Mobile View

After

항중력 개선 11.3%

After

95.8% Improvement

Skin soothing ²

Blue 3D Abstract

Before

Mobile View

After

피부 진정 효과 개선 91.3%

Four-Dimensional Pore Density Care ⁴


Four-Dimensional Pore Density Care ⁴


Blue 3D Abstract

Before

Mobile View

After

FORHERTZ 3D Booster Mask Gel standalone

FORHERTZ 3D Booster Mask Gel standalone

Penta + FORHERTZ 3D Booster Mask Gel combined use

Penta + FORHERTZ 3D Booster Mask Gel combined use

Pore Area

Pore Area

19.6% improvement

19.6% improvement

0.15

0.12

Pore Count

Pore Count

28.4% improvement

28.4% improvement

120.3

86.1

Pore Depth

Pore Depth

19.2% improvement

19.2% improvement

0.03

0.02

Pore Density

Pore Density

30.7% improvement

30.7% improvement

26.67

18.48

Deep Elasticity Density ⁵


Deep Elasticity Density ⁵


Skin Depth 2mm

Deep firmness

23.8% improvement

23.8% improvement

0.46

0.57

Skin Depth 4mm

Surface firmness

16.5% improvement

16.5% improvement

0.58

0.67

Skin Depth 8mm

Skin density

16.0% improvement

16.0% improvement

0.65

0.76

  • 3D Skin Radiance ⁶

    Right (37°): 192.9% Improvement
    Left (37°): 156.3% Improvement

    Blue 3D Abstract

    Right

    Mobile View

    Left

  • 3D Skin Radiance ⁶

    Right (0°): 174.2% Improvement
    Left (0°): 166.1% Improvement

    Blue 3D Abstract

    Right

    Mobile View

    Left

  • Skin Soothing ⁷

    95.8% Improvement

    Blue 3D Abstract

    Before

    Mobile View

    After

  • Skin Cooling ⁸

    Temperature Reduced by 10.1°C

    Blue 3D Abstract

    Before

    Mobile View

    After

  • 3D Skin Radiance ⁶

    Right (37°): 192.9% Improvement
    Left (37°): 156.3% Improvement

    Blue 3D Abstract

    Right

    Mobile View

    Left

  • 3D Skin Radiance ⁶

    Right (0°): 174.2% Improvement
    Left (0°): 166.1% Improvement

    Blue 3D Abstract

    Right

    Mobile View

    Left

  • Skin Soothing ⁷

    95.8% Improvement

    Blue 3D Abstract

    Before

    Mobile View

    After

  • Skin Cooling ⁸

    Temperature Reduced by 10.1°C

    Blue 3D Abstract

    Before

    Mobile View

    After

1-7) Conducted by P&K Skin Research Center Co., Ltd. | Adults aged 19–60 | Mar. 23–Apr. 22, 2026 | Q-Mode | Comparison of gel alone vs. gel + device | Individual results may vary depending on skin condition and usage environment.
8) Conducted by P&K Skin Research Center Co., Ltd. | Adults aged 19–60 | May 20–21, 2026 | Soothing Mode | Comparison of no treatment vs. gel + device | Individual results may vary depending on skin condition and usage environment.

Skin Absorption⁹
492% Improvement

Inner and outer
firmness & density

(Penta + 3D Booster Mask Gel)

(Penta + 3D Booster Mask Gel)

Blue 3D Abstract

Before

Mobile View

After

FORHERTZ 3D Booster Mask Gel standalone

FORHERTZ 3D Booster Mask Gel standalone

Penta + FORHERTZ 3D Booster Mask Gel combined use

Penta + FORHERTZ 3D Booster Mask Gel combined use

Absorption Depth

Absorption Depth

67.1% improvement

67.1% improvement

16

26.7

Absorption Speed

Absorption Speed

67.1% improvement

67.1% improvement

32

53.5

9) Conducted by P&K Skin Research Center Co., Ltd. | Adults aged 19–60 | Mar. 10–26, 2026 | Hydration Mode (Power Care) | Comparison of gel alone vs. gel + device | Individual results may vary depending on skin condition and usage environment.