Diode laser vs IPL: What’s the difference and which method removes hair more effectively?
Blog BackTable of Contents:
- Diode laser - what is it?
- IPL - what is it?
- Differences between diode laser and IPL
- Which hair removal method is more effective?
- Which to choose?

Laser hair removal is becoming increasingly popular as an effective way to remove hair permanently. However, not all laser hair removal methods are the same. The most common technologies of choice are diode laser and IPL (Intense Pulsed Light). Although both methods use light, they differ in key aspects - from the way they work, to their effectiveness, to their comfort. Let's take a look at what these technologies are, the differences between them and which method of hair removal is more effective.
Diode laser - what is it?
A diode laser is a device that uses a beam of light with a single, precisely selected wavelength, usually in the range of 800-810 nm. The laser works by targeting the melanin (pigment) in the hair. The light energy is absorbed by the melanin, leading to heating and destruction of the hair follicle. As a result, the hair stops growing. It precisely destroys hair follicles without significantly affecting the surrounding tissue and is designed for permanent hair removal.
Diode laser technology is considered to be very effective, especially for those with fair skin and dark hair. Modern laser devices are equipped with cooling systems to make the treatment more comfortable, minimising pain and the risk of irritation.
IPL - what is it?
IPL, or Intense Pulsed Light, is a technology that uses a broad spectrum of light at different wavelengths (usually from 500 to 1200 nm). Unlike a diode laser, IPL does not emit a single concentrated beam of light, but dispersed pulses. Like the laser, IPL acts on the melanin in the hair, but with less precision, because light waves reach different depths.
Due to its broad wavelength spectrum, IPL works more superficially and less effectively on deep-seated hair roots. This method can be used not only for hair removal, but also for skin improvement treatments such as photorejuvenation, hyperpigmentation reduction and acne or blood vessel treatment.
Differences between diode laser and IPL
- Wavelength of light:
Diode laser: Uses a single, precise wavelength (usually 800-810 nm) that targets hair follicles precisely.
IPL: Emits light with a broad spectrum of wavelengths, making it less precise in its operation. - Effectiveness:
Diode laser: Considered more effective, especially for dark hair and fair skin. The right wavelength allows for deeper action and longer-lasting results.
IPL: Works more superficially, making it less effective at removing deep-seated hair follicles. Effects are shorter in duration compared to the diode laser. - Safety:
Diode laser: Less risky as it works precisely and targets only the hair melanin, minimising the risk of skin irritation.
IPL: The light beam is more diffuse, increasing the risk of burns and irritation, especially on darker skin. - Treatment comfort:
Diode laser: Modern devices are equipped with cooling systems to reduce the sensation of pain.
IPL: Can be less comfortable, especially if the device does not have a cooling function. - Versatility:
Diode laser: Works better on fair skin and dark hair. Modern devices can also be used on darker complexions.
IPL: Due to its lower precision, it is less effective on darker skin and very light hair. - Price and number of treatments:
Diode laser: Treatments tend to be more expensive, but require fewer sessions to achieve a lasting effect (usually 6-8 treatments). In the long run, it is more profitable.
IPL: Cheaper, but may require more treatments (8-12) and the results are less permanent. This may increase overall costs.
Which hair removal method is more effective?
The diode laser is considered a more effective method of hair removal compared to IPL. It works precisely on hair follicles, allowing permanent hair removal in fewer treatments. With the right wavelength, it reaches deeper, making the results more permanent and visible.
IPL, although a cheaper alternative, often requires more treatments and may not produce satisfactory results in those with light-coloured hair or deeper hair follicles. However, IPL is a good option for those looking for a less invasive and more versatile method, as the technology offers other skin benefits in addition to hair removal.
Which to choose?
If you are looking for permanent and effective hair removal, the diode laser is the best choice. It is ideal for those who want to invest in permanent results and minimise the number of sessions at the same time. IPL can be a good option for those with a smaller budget or for those who want additional benefits for their skin condition. However, the key is to match the method to your skin and hair type - a consultation with an experienced professional will help with this.