Knowledge How is the Visual Pain Scale (VPS) used to evaluate laser hair removal equipment? Optimize Comfort & Efficacy
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Tech Team · Belislaser

Updated 2 hours ago

How is the Visual Pain Scale (VPS) used to evaluate laser hair removal equipment? Optimize Comfort & Efficacy


The Visual Pain Scale (VPS) functions as a critical quantitative metric for assessing the delicate balance between high-energy laser output and patient comfort. In the context of equipment evaluation, it is primarily used to test the efficacy of the machine's integrated cooling system and pulse management technology. By monitoring pain levels during the laser's interaction with the skin, manufacturers and clinicians can objectively verify if a device delivers effective treatment energy without exceeding patient tolerance.

A low VPS score is a definitive indicator of technical competitiveness, proving that a laser device can maintain high energy output for effective hair removal while successfully mitigating pain through advanced cooling mechanisms.

Evaluating Technical Competitiveness

Measuring Cooling System Efficiency

The primary utility of the VPS is evaluating the integrated cooling system of the laser equipment.

A device that registers a low VPS score while operating at high energy levels demonstrates superior cooling capabilities. This indicates the system effectively protects the epidermis, neutralizing the heat generated by the laser pulse.

Assessing Pulse Management

VPS scores are also used to validate the sophistication of the equipment's pulse management.

Advanced devices modulate how energy is delivered to the skin to minimize nerve stimulation. A lower pain score suggests the equipment utilizes precise pulse durations and modes that maximize follicular damage while minimizing sensory reception.

Determining Market Viability

For manufacturers and buyers, the VPS acts as a proxy for the overall technical competitiveness of the equipment.

In a saturated market, the ability to deliver "painless" treatments without sacrificing results is a key differentiator. Equipment that consistently yields low VPS scores is viewed as technologically superior and more marketable to patient-centric clinics.

Optimizing Clinical Parameters

Balancing Energy and Comfort

Practitioners use pain scale data to find the optimal operating window for the equipment.

By correlating VPS feedback with specific energy settings, technicians can identify the highest possible energy output that remains tolerable for the patient. This ensures the treatment is aggressive enough to be effective but gentle enough to ensure compliance.

Converting Subjective Experience to Data

The VPS transforms subjective patient sensations into structured, comparable data.

This allows for a standardized comparison between different machines or treatment modes. It removes the guesswork from equipment evaluation, replacing vague descriptions of discomfort with actionable numerical values.

Understanding the Trade-offs

The Risk of Under-Treatment

A low VPS score is desirable, but it must not be achieved simply by lowering the energy output below therapeutic levels.

If a machine registers a '0' on the pain scale, the evaluator must verify that the fluence (energy) is still sufficient to destroy the hair follicle. The goal is low pain at high energy, not low pain due to low power.

Subjectivity Variations

While the VPS attempts to standardize pain, individual patient tolerance varies significantly.

Evaluations of equipment performance should ideally involve a diverse test group. Relying on a single subject's VPS score may skew the data regarding the machine's actual cooling performance.

Making the Right Choice for Your Goals

To use the Visual Pain Scale effectively for equipment evaluation, consider your specific objective:

  • If your primary focus is Equipment Selection: Look for devices that maintain a low VPS score specifically when running at high-fluence settings, as this proves superior cooling technology.
  • If your primary focus is Clinical Application: Use VPS feedback during initial test spots to customize pulse modes, ensuring the patient can tolerate the energy required for permanent hair reduction.

Ultimately, the Visual Pain Scale is not just a measure of comfort; it is a stress test for the engineering quality of the laser's safety systems.

Summary Table:

Evaluation Metric VPS Utility in Equipment Testing Performance Indicator
Cooling Efficiency Measures epidermal protection during high-energy output Low VPS at high fluence = Superior cooling
Pulse Management Validates energy modulation and nerve stimulation control Lower scores indicate refined pulse technology
Market Viability Acts as a benchmark for "painless" treatment claims Low VPS increases clinic competitiveness
Clinical Calibration Balances therapeutic energy with patient tolerance Higher tolerable fluence = Better results
Data Standardization Converts subjective sensation into actionable technical data Enables objective comparison between devices

Elevate Your Clinic’s Standards with BELIS Technology

At BELIS, we specialize in professional-grade medical aesthetic equipment designed exclusively for clinics and premium salons. We understand that technical competitiveness is measured by the balance of power and patient comfort. Our advanced laser systems—including Diode Hair Removal, CO2 Fractional, Nd:YAG, and Pico lasers—integrate superior cooling and pulse management to ensure low VPS scores without sacrificing clinical results.

Beyond laser technology, our portfolio includes HIFU, Microneedle RF, body sculpting (EMSlim, Cryolipolysis, RF Cavitation), and specialized care devices like Hydrafacial systems and skin testers. Partner with BELIS to provide your clients with the ultimate pain-free, high-efficiency experience.

Ready to upgrade your equipment? Contact us today to explore our professional solutions!

References

  1. Şule Gençoğlu. Efficacy and Safety of Alexandrite and Nd:YAG Laser Combination in Permanent Hair Removal. DOI: 10.4236/ijcm.2023.149037

This article is also based on technical information from Belislaser Knowledge Base .

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