A BRIEF HISTORY OF LIGHT THERAPY
The use of light to support various skin and medical applications has been around for centuries. The Egyptians, Romans and Greeks all practised light-based therapies in different forms.
However, Danish physician Niels Finsen, known as the father of phototherapy, received the Nobel Prize in 1903 when he developed the first artificial light used in managing certain skin conditions.
Since then, many devices have been developed, including lasers, intense pulsed light (IPL), infrared devices and Light Emitting Diodes (LEDs).
The modality of Intense Pulsed Light was first listed as a medical device in 1994, meaning it has been in clinical use for over 20 years and remains widely used in aesthetic practice.
WHAT IS THE DIFFERENCE BETWEEN LASER AND INTENSE PULSED LIGHT?
Both laser and IPL use the principle of selective photothermolysis. This refers to light energy being absorbed into specific areas of the skin, where it is converted into heat energy. This process is designed to focus on particular targets in the skin while limiting impact on surrounding tissue.
Light consists of a spectrum of wavelengths. IPL delivers a broad range of wavelengths, whereas laser devices emit a single wavelength. Certain wavelengths are absorbed by specific colours in the skin. For example, some wavelengths interact with red tones associated with visible vessels, while others interact with brown pigment.
Because a laser delivers a single wavelength, different lasers are typically selected depending on the skin concern being addressed.
Intense Pulsed Light, on the other hand, delivers a broader spectrum of light. This allows multiple visible skin concerns—such as uneven pigmentation and visible redness—to be addressed within the same session.
Changes in skin tone, visible pigmentation, and vascular features are commonly associated with sun exposure and ageing. IPL is often used as an initial option to support improvement in the appearance of these concerns.
In some cases, deeper or more pronounced concerns may require alternative or additional treatment approaches following assessment.
WHAT CAN AND CAN’T IPL DO?
Intense Pulsed Light is commonly used to support improvement in the appearance of:
- freckles
- sun spots and pigmentation
- visible redness
- superficial capillaries
This approach is often referred to as photorejuvenation.
IPL is not suitable for all skin types. It is generally not recommended for recently tanned skin or certain darker skin tones, as the light may also be absorbed by surrounding pigment. This can increase the risk of uneven results or post-inflammatory pigmentation.
IPL is not used for skin cancers, raised moles, or certain lesions.
A consultation is required to determine whether IPL is appropriate for your skin and concerns.
HOW MANY IPL TREATMENTS ARE REQUIRED?
I use the Nordlys IPL, a device used in medical settings, and perform all treatments myself.
While treatment plans vary, some individuals may require one to two sessions spaced approximately one month apart. Others may require additional sessions depending on their skin presentation.
Because pigmentation and vascular changes can develop over time, maintenance treatments may be considered in the future.
Some patients report that their skin appears clearer, more even in tone, and more refreshed in the weeks following treatment. Individual responses and results will vary.
WHAT HAPPENS DURING IPL TREATMENT?
During IPL treatment, light energy creates a warming sensation in the skin. A topical numbing cream may be applied beforehand to improve comfort.
Eye protection is used, and a cooling gel is applied to the skin. The IPL device is then adjusted based on your skin type and the concerns being addressed. The light is delivered in pulses across the treatment area, with a full-face session typically taking 15 to 20 minutes.
It is important that treatment is performed by a trained practitioner to support appropriate settings and minimise risk.
Following treatment, the skin may appear slightly flushed. Cooling products such as aloe vera gel may be applied to help soothe the skin.
HOW LONG UNTIL I NOTICE CHANGES AFTER IPL?
Following treatment, some individuals may notice temporary darkening of pigmentation before gradual fading occurs. This phase can last one to two weeks and is often manageable with makeup.
Changes in visible pigmentation and redness may occur gradually over several weeks.
Some patients report that their skin appears more refreshed over time. Results and timelines vary depending on the individual and their skin.
COMPLIMENTARY DOCTOR’S CONSULTATION FOR IPL
A consultation is offered to assess your skin and discuss whether IPL may be suitable for you, along with the number of sessions that may be recommended.
I have been using IPL technology at Cosmetique Solutions since 2004, and it continues to be a popular option for patients seeking support for overall skin clarity and tone.