Understanding the Alexandrite Laser: Newangie’s Advanced Comparison
Nov 13, 2025
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1. The Origin of the Alexandrite Laser
The Alexandrite laser, operating at a wavelength of 755 nm, was developed in the 1980s as one of the first solid-state lasers used for aesthetic and medical applications. It was originally commercialized by Candela Medical, a leading U.S. company known for its GentleLASE series. Candela's Alexandrite laser quickly became the gold standard for hair removal, vascular lesion treatment, and pigmentation therapy.
The Alexandrite laser uses a synthetic chrysoberyl crystal doped with chromium ions (Cr³⁺) as its active medium, producing a distinctive red light ideal for targeting melanin - the pigment found in hair and skin.
2. Key Features and Advantages of the Original Candela Alexandrite Laser
Candela's GentleLASE series introduced the Dynamic Cooling Device (DCD) - a patented cryogen-based cooling system that sprays a precise burst of cooling agent onto the skin a few milliseconds before each laser pulse. This innovation was designed to protect the epidermis, reduce discomfort, and allow higher treatment fluences for better results.
However, the DCD system requires cryogen cartridges as consumables, which increases long-term maintenance costs for clinics and beauty centers.
DCD Cooling System Advantages:
Enhanced comfort: Reduces pain and heat sensation during treatment.
Epidermal protection: Shields the skin from thermal injury.
Improved treatment efficiency: Enables higher laser energy for faster results.
Reduced side effects: Minimizes redness and swelling.
In contrast, Newangie's newly developed Alexandrite laser features an advanced air-cooling system that delivers continuous cold airflow during operation to protect the skin and enhance comfort.
This blower-type cooling method achieves efficient surface cooling without using any consumables, making it more cost-effective, environmentally friendly, and easier to maintain for professional users.
3. Alexandrite vs. Nd:YAG - Wavelength and Skin Type Suitability
| Laser Type | Wavelength | Best for | Penetration Depth | Main Use |
|---|---|---|---|---|
| Alexandrite | 755 nm | Light skin (I–III) | Moderate | Fine hair, pigmentation |
| Nd:YAG | 1064 nm | Darker skin (IV–VI) | Deep | Coarse hair, vascular lesions |
The 755 nm Alexandrite laser offers high melanin absorption, ensuring effective treatment for light skin tones.
The 1064 nm Nd:YAG laser penetrates deeper and is safer for darker skin tones due to lower melanin absorption.
4. Newangie's Alexandrite and Nd:YAG Dual-Wavelength Advantage
Building upon Candela's legacy, Newangie integrates 755 nm Alexandrite and 1064 nm Nd:YAG technologies in one versatile system - designed to meet the needs of modern beauty salons and clinics.
Comparison Between Original and Newangie Machines
| Feature | Candela Original | Newangie Dual-Wavelength System |
|---|---|---|
| Spot Size | 1.5–26 mm | 6 standard handpieces: 8, 10, 12, 14, 18, 20 mm |
| Energy | Alex: 1–20 J/cm², YAG: 1–30 J/cm² | Alex: up to 70 J/cm², YAG: up to 110 J/cm² |
| Pulse Width | 1–100 ms | 1–100 ms |
| Frequency | 0.5–2 Hz | 0.5–10 Hz |
| Cooling System | DCD (cryogen spray) | Advanced air-cooling system (blow cooling) |
| Operating Modes | Single wavelength | Dual wavelength: 755/1064 nm and combined 755+1064 nm |
Newangie's model delivers stronger energy output, faster treatment speed, and a broader spot size range. It also supports combined wavelength emission, allowing simultaneous action on multiple chromophores for enhanced efficacy and comfort.
5. Why Choose Newangie's System
Higher energy efficiency: up to 110 J/cm², ensuring faster and more effective hair removal.
Multi-spot handpieces: suitable for different treatment areas, from small facial zones to large body areas.
Adjustable frequency (0.5–10 Hz): supports faster repetition rates for quick sessions.
Enhanced cooling: advanced air-blowing system provides continuous comfort without consumables.
Dual wavelength integration: suitable for all skin types (I–VI) and both fine and coarse hair.
6. Conclusion
The Alexandrite laser remains one of the most effective and time-tested technologies for laser hair removal and pigmentation treatments. While Candela pioneered its medical application and safety standards, Newangie's upgraded system integrates these proven technologies with higher energy, faster speed, and versatile cooling - providing beauty professionals with a cost-effective, efficient, and all-skin-type solution.