Hair removal
4-wavelength diode lasers (4W) for hair removal
A 4-wavelength diode laser (4W) combines four wavelengths in one handpiece: 755, 808, 940 and 1064 nm. Here you learn what this means and which 4W devices we offer.
Technology
What does 4W mean?
Diode lasers produce light with fixed wavelengths. 4W stands for four wavelengths that the device emits at the same time in one handpiece. Compared with a 3W diode laser, the wavelength 940 nm is added. The wavelengths differ in how strongly they are absorbed by the pigment melanin and how deep the light penetrates into the skin.
The wavelengths
755 nm
The shortest wavelength of the combination. It is in the range of the alexandrite laser and is absorbed more strongly by the pigment melanin than the longer wavelengths.
808 nm
The classic wavelength of diode lasers for hair removal. It lies between 755 and 1064 nm.
940 nm
The fourth wavelength of 4W devices. It lies between 808 and 1064 nm and adds to the combination of 3W devices.
1064 nm
The longest wavelength of the combination. It is in the range of the Nd:YAG laser, is absorbed less strongly by melanin and penetrates deeper into the skin.
How it works
4 wavelengths in one handpiece: how it works
A diode laser emits light with fixed wavelengths. The light is absorbed by the pigment melanin in the hair and hair follicle and converted into heat there.
A 4-wavelength diode laser combines the wavelengths 755, 808, 940 and 1064 nm in one handpiece and emits them at the same time. As each wavelength is absorbed by melanin to a different degree and penetrates the skin to a different depth, the combination covers several skin depths in one pass.
A cooled sapphire tip on the handpiece cools the skin surface during treatment. You set power, pulse frequency and spot size on the device to match skin type, hair colour and body zone.
Devices
4W diode lasers in our range
All devices with four wavelengths at a glance, some with AI-assisted handpieces. Equipment, handpieces and prices are listed on each product page.
Imperia Precision
AI-assisted 4-wavelength diode laser (755 / 808 / 940 / 1064 nm)
- Interchangeable spot system:
- 1800 W and 3000 W: 8 / 12×24 / 12×36 mm; 2000 W: 8 / 15×15 / 15×30 mm
- Working speed:
- up to 20 Hz
- Cooling:
- 360° ICE technology, sapphire contact cooling, Indus Power water pump
from €18,900.00 excl. VAT
View device
Imperia MAX
4-wavelength diode laser with AI-sensor handpieces (755 / 808 / 940 / 1064 nm)
- Handpieces:
- 1000 W and 2000 W, with AI sensor
- Interchangeable spot system:
- 15×15 and 15×30 mm
- Working speed:
- up to 20 Hz
- Cooling:
- ICE technology, Indus Power water pump; air, water and semiconductor cooling
from €14,900.00 excl. VAT
View device
Imperia Pro
4-wavelength diode laser (755 / 808 / 940 / 1064 nm)
- Head power:
- 2000 W
- Interchangeable spot system:
- 5 / 14×14 / 14×28 / 16×40 mm
- Pulse frequency:
- 1 to 10 Hz
- Cooling:
- Micro-channel cooling system, down to -16 °C
- Lifetime:
- 100 million shots
Comparison
3W and 4W at a glance
Both options are diode lasers for hair removal. They differ in the number of wavelengths.
| 3W and 4W at a glance | 3W3-wavelength diode laser | 4W4-wavelength diode laser |
|---|---|---|
| Number of wavelengths | 3 | 4 |
| Wavelengths | 755 / 808 / 1064 nm | 755 / 808 / 940 / 1064 nm |
| Devices in our range |
|
Prices
What does a 4-wavelength diode laser cost?
The 4W diode lasers in our range start from €14,900 excl. VAT. The price mainly depends on handpiece power, spot size, cooling and equipment.
You can finance every device with terms of up to 60 months, spreading the investment over the time the device works in your studio.
Technology in detail
How a diode laser works
A short look at the technology behind the devices. The equipment of each device is listed on its product page.
Laser diodes
The light is produced in laser diodes that sit side by side on so-called bars.
Light and heat
The light is absorbed by the pigment in the hair and converted into heat there.
Contact cooling
Many handpieces cool the skin surface through a chilled contact window, for example made of sapphire.
Growth phases
Hair grows in phases. That is why hair removal is planned in several sessions.
Buying guide
What to look for when buying a diode laser
- Handpiece power (watts): how much energy is available per pulse.
- Spot size: a large spot covers more area per pulse, a small tip reaches the face and small zones.
- Pulse frequency (Hz): affects the working speed in gliding mode.
- Cooling: type of cooling and temperature at the sapphire tip.
- Handpiece lifetime: stated in millions of shots.
- Service near you: introduction, training, maintenance, repair and replacement device.
- Qualification: in Germany, NiSV qualification is required to use the device.
Your benefits
Buying a diode laser from beautytechnik
Free delivery
We deliver your device free of charge within Germany and set it up with you.
Introduction and training
Your team is introduced to the device in your studio. Our academy offers the NiSV qualification.
Financing up to 60 months
Non-binding financing offer with the term you prefer.
Service and repair
Maintenance, repair and spare parts from one source, with a service team in Berlin.
Live demo
Try the devices in our showroom in Zeuthen near Berlin or in your studio.
Good to know
Before you start in your studio
- Qualification: in Germany, using lasers for cosmetic purposes requires NiSV qualification.
- Medical history: clarify skin type, pre-existing conditions and contraindications before every treatment.
- Choice of device: we discuss personally which option suits your treatments, ideally at a live demo.
FAQ
Frequently asked questions
Want to see a diode laser live?
Book a live demo or get personal advice.