Last Updated: 23 September 2026
Candela Laser Hair Removal Device

Candela GentleLase Pro is a professional laser system that uses 755 nm Alexandrite laser technology and is primarily considered for laser hair reduction applications. The system allows parameters such as laser wavelength, spot size, pulse duration, fluence, and skin cooling to be evaluated according to the individual treatment plan. For this reason, the technical specifications of the device should not be assessed in isolation; they should be considered together with the individual's skin and hair characteristics, treatment area, and clinical assessment by a qualified healthcare professional.

What Is Candela GentleLase Pro Used For?

The device is primarily used for laser hair reduction procedures intended to reduce unwanted hair. The 755 nm Alexandrite laser energy is absorbed by melanin within the hair structure, with the aim of delivering thermal energy to the hair follicle.

Treatment planning may vary depending on factors such as skin type, hair color, hair thickness, and the characteristics of the treatment area. Therefore, using the same parameters for every individual is not appropriate.

Laser hair reduction should not be regarded as a treatment for a skin disease, and the intended use of the device should be considered within the context of cosmetic laser applications.

Candela GentleLase Pro Features

Candela GentleLase Pro features include a 755 nm Alexandrite laser source, different spot sizes, adjustable pulse durations, and a Dynamic Cooling Device system.

The system provides technical options that allow treatment parameters to be adjusted according to different skin and hair characteristics. Any use of the device beyond laser hair reduction should be considered separately according to the relevant medical indication and clinical assessment.

Technical Feature Description
Laser type Alexandrite
Wavelength 755 nm
Spot size options 6, 8, 10, 12, 15, and 18 mm
Pulse duration 0.25–100 ms
Repetition rate Up to 2 Hz
Cooling system Dynamic Cooling Device (DCD)

755 nm Alexandrite Laser Technology

755 nm Alexandrite laser technology refers to laser energy delivered at a wavelength of 755 nanometers.

The 755 nm Alexandrite wavelength is strongly absorbed by melanin, which is an important characteristic in applications designed to target hair follicles. However, because melanin is also present in the skin, factors such as skin tone, tanning status, and pigmentation must be taken into account when selecting treatment parameters.

For this reason, Alexandrite laser treatment should not be performed using the same settings for every skin type.

Dynamic Cooling Device (DCD) System

The Dynamic Cooling Device (DCD) system helps cool the epidermal surface by delivering a controlled spray of cryogen immediately before the laser pulse.

This cooling mechanism is designed to support protection of the skin surface while laser energy is delivered to the target area.

The use of a cooling system does not guarantee that the procedure will be completely painless. Sensation and discomfort may vary between individuals and according to the treatment area and parameters used.

Spot Size and Pulse Parameters

Spot size and pulse parameters are technical variables that affect how laser energy is delivered to the skin.

When evaluating the technical characteristics of a laser hair reduction device, spot size, pulse duration, and fluence should be considered together rather than independently.

Candela GentleLase Pro offers different spot sizes ranging from 6 to 18 mm. Additional or alternative sizes may vary according to the specific system configuration.

Candela GentleLase Pro Technology in Silk Epilation Applications

“Silk Epilation” is a service or commercial term used to describe certain applications performed with Candela laser systems.

The underlying principle involves the use of laser energy that targets melanin within the hair follicle. In this context, the technical characteristics of Candela GentleLase Pro include parameters such as wavelength, spot size, pulse duration, fluence, and the cooling system.

The term “Silk Epilation” does not refer to a separate physical laser technology or an independent medical method. Therefore, when evaluating Candela laser systems, commercial or service-related terminology should be distinguished from the actual operating principles of the laser technology.

The way the application is planned may vary depending on factors such as skin tone, hair characteristics, treatment area, and individual tolerance.

The Role of Laser Parameters in Candela GentleLase Pro

Laser parameters in Candela GentleLase Pro are key technical variables used when planning treatment according to individual skin and hair characteristics.

Within laser hair reduction technology, wavelength, spot size, pulse duration, and fluence should not be considered independently from one another.

Individual parameter selection should be based on clinical assessment by a qualified healthcare professional.

Spot Size

Spot size refers to the diameter of the area on the skin covered by the laser beam during each pulse.

The availability of different spot sizes in Candela GentleLase Pro allows technical selection according to the treatment area and characteristics of the target.

Because spot size is associated with both the distribution of laser energy within tissue and the size of the treatment area, it should not be evaluated as an isolated parameter.

Pulse Duration

Pulse duration refers to the amount of time over which laser energy is delivered to the target area.

The selection of pulse duration should be considered together with hair characteristics, target tissue, skin condition, and other treatment parameters.

Although the device provides a broad technical pulse duration range, the appropriate setting for a specific individual should not be recommended without clinical assessment.

Fluence

Fluence refers to the amount of laser energy delivered per unit area.

In Candela laser applications, fluence should be determined in conjunction with skin type, hair characteristics, treatment area, and other relevant clinical factors.

A higher or lower numerical value should not be interpreted independently as being more appropriate or more effective.

The Importance of Skin Assessment When Using Candela GentleLase Pro

Skin assessment is a fundamental step when planning an application with Candela GentleLase Pro.

Factors such as skin tone, tanning, pigmentation, skin sensitivity, treatment area, and previous procedures should be taken into consideration. Hair color, thickness, and density are also relevant because they influence the way laser energy interacts with the intended target.

Because light-colored, grey, or white hair contains lower amounts of melanin, the ability of an Alexandrite laser to target these hairs may differ.

Recent sun exposure or tanning may also require reassessment of the treatment plan before proceeding.

Factor Assessed Why It Is Considered
Skin tone To assess melanin density and its interaction with laser energy
Tanning To determine whether treatment conditions need to be reassessed
Hair color To evaluate the amount of melanin within the target hair
Hair thickness To support appropriate parameter planning
Treatment area Because skin characteristics and treatment conditions vary by area
Previous procedures To assess the current condition and tolerance of the skin

The Role of Clinical Assessment in Device Use

Clinical assessment helps ensure that technical laser parameters are considered together with the individual's characteristics.

When planning Alexandrite laser hair reduction, factors such as skin type, hair characteristics, treatment area, current tanning status, and medical history should be evaluated.

Technical specifications alone do not determine the outcome of the procedure. The qualifications of the practitioner, treatment environment, parameter selection, and adherence to appropriate safety procedures are also relevant.

If there is an active skin infection, open wound, significant irritation, or another condition requiring medical evaluation, the procedure may need to be postponed.

Medications and recent dermatological or aesthetic procedures may also influence treatment planning. For this reason, pre-treatment assessment and procedural safety are as important as the selection of the laser device itself.

The fact that a device operates at a specific wavelength does not mean that the same protocol should be used for every individual.

When using a Candela laser hair reduction system, technical settings should be selected on an individual basis and the treatment plan may be adjusted where necessary.

Commercial terms such as “Silk Epilation” do not replace this individualized clinical approach.

Frequently Asked Questions

  • What laser wavelength does Candela GentleLase Pro use?

Candela GentleLase Pro uses a 755 nm Alexandrite laser.

  • What is the purpose of the DCD system in Candela GentleLase Pro?

The Dynamic Cooling Device helps cool the skin surface immediately before delivery of the laser pulse.

  • What laser technology is used in Silk Epilation applications?

The term “Silk Epilation” is associated with applications performed using Candela laser systems and is based on laser technology. It does not refer to a separate laser wavelength or an independent physical treatment method.

  • Are the same settings used for everyone with Candela GentleLase Pro?

No. Treatment parameters should be determined according to individual skin and hair characteristics, the treatment area, and clinical assessment.

  • What does spot size mean in a laser device?

Spot size refers to the diameter of the area covered by the laser beam during each pulse.

  • Why is hair color important in Alexandrite laser applications?

Hair color is relevant because the amount of melanin within the hair influences how laser energy is absorbed and how effectively the intended target can be reached.