2.6 Electricity & Safety

Cosmetology State Board Exam Exam

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1 Introduction to the Cosmetology State Board Exam

1.1 About the Cosmetology State Board Exam 1.2 NIC vs State-Specific Exams 1.3 Exam Content Breakdown 1.4 How to Register and What to Expect 1.5 How to Use This Study Guide

2 Chapter 2: Scientific Concepts (35% of NIC Exam)

2.1 Infection Control & Sanitation 2.2 Bacteriology 2.3 Anatomy & Physiology - Skin 2.4 Anatomy & Physiology - Hair & Nails 2.5 Chemistry for Cosmetology 2.6 Electricity & Safety

3 Hair Care and Services

3.1 Hair Analysis and Consultation 3.2 Shampooing and Conditioning 3.3 Haircutting Fundamentals 3.4 Hairstyling and Finishing 3.5 Chemical Texture Services 3.6 Hair Coloring

4 Skin Care & Esthetics

4.1 Skin Analysis & Consultation 4.2 Facial Treatments 4.3 Hair Removal 4.4 Makeup Application

5 Chapter 5: Nail Care

5.1 Nail Anatomy & Disorders 5.2 Manicure Services 5.3 Pedicure Services 5.4 Nail Enhancements 5.5 Nail Art & Finishing

6 Chapter 6: State Licensing Requirements

6.1 How State Licensing Works 6.2 Training-Hour Requirements Across States 6.3 Exam Components: Theory and Practical 6.4 Application, Background Checks & Fees 6.5 Reciprocity, Endorsement & License Transfer 6.6 Renewal and Continuing Education 6.7 Scope of Practice & License Types 6.8 State Sanitation Rules & Discipline 6.9 Multi-State Comparison & Relocation Guide

7 Chapter 7: New York Cosmetology Exam

7.1 About the New York Cosmetology Exam 7.2 New York State Laws & Regulations 7.3 NY Written Exam Content 7.4 NY Practical Exam 7.5 NY-Specific Practice Questions

8 Chapter 8: Florida Cosmetology Exam

8.1 About the Florida Cosmetology Exam 8.2 Florida State Laws & Regulations 8.3 Florida Salon Requirements 8.4 FL Theory Exam Content 8.5 FL Clinical Exam Content 8.6 FL-Specific Practice Questions

9 Chapter 9: Test Strategies

9.1 Test-Taking Strategies 9.2 Preparing for the Written Exam 9.3 Preparing for the Practical Exam 9.4 Exam Day Checklist 9.5 Comprehensive Practice Questions 9.6 Final Review Checklist

2.6 Electricity & Safety

Key Takeaways Explain This Topic AI

Direct current (DC) flows in one direction; alternating current (AC) changes direction periodically.

Galvanic current is DC used for desincrustation (negative pole) and iontophoresis (both poles).

High-frequency (Tesla) current is AC that produces germicidal and stimulating effects.

GFCI outlets protect against electrical shock and are required in wet salon areas.

Never use electrical equipment on clients with pacemakers or metal implants.

Last updated: January 2026

Understanding electrical principles and safety is essential for cosmetologists who use electrical equipment for facials, scalp treatments, and other services. This knowledge also appears on the NIC exam.

• Types of Electrical Current
• Direct Current (DC)

Direct current flows continuously in one direction.

Characteristics:

• Constant, steady flow
• Has a positive (+) and negative (-) pole
• Produced by batteries and DC power supplies
• Used in galvanic treatments

Salon Uses:

• Galvanic facial treatments
• Iontophoresis
• Desincrustation
• Alternating Current (AC)

Alternating current rapidly changes direction at regular intervals.

Characteristics:

• Flow reverses direction (60 times per second in US)
• Standard household electricity
• Powers most salon equipment
• Can be modified for treatments

Salon Uses:

• Most electrical equipment
• High-frequency machines
• Steamers, dryers, heating tools

Loading diagram... Types of Current and Salon Modalities

• Electrical Modalities in Cosmetology
• Galvanic Current

Galvanic current is direct current (DC) that produces chemical effects when passed through the body.

Two Main Uses:

• Treatment Pole Used Action Purpose
• Desincrustation Negative (-) Creates alkaline reaction Softens sebum, deep cleansing
• Iontophoresis Both (depends on product) Ion penetration Product penetration

How It Works:

• Uses positive (anode) and negative (cathode) electrodes
• Creates chemical reaction in tissues
• Client holds one electrode; esthetician uses other on skin
• Requires conductive gel or solution
• High-Frequency (Tesla Current)

High-frequency current is rapidly oscillating alternating current that produces heat and germicidal effects.

Characteristics:

• Thermal (heat-producing)
• Germicidal (antibacterial)
• Stimulating to skin

Electrode Types:

• Electrode Color Effect Use
• Direct (Mushroom, Point) Orange/Red glow Warming, germicidal Oily, acne-prone skin
• Indirect No glow (client holds) Stimulating Dry, mature skin

Benefits:

• Kills bacteria on skin surface
• Increases blood circulation
• Helps heal acne lesions
• Stimulates glands and metabolism
• Microcurrent

Microcurrent uses extremely low levels of electrical current similar to the body's natural current.

Benefits:

• Muscle re-education and toning
• Increased ATP (cellular energy) production
• Improved product penetration
• Anti-aging effects
• Electrical Equipment Safety
• Basic Safety Guidelines

• Practice Reason
• Inspect equipment before use Check for frayed cords, damage
• Keep cords away from water Prevent electrocution
• Unplug equipment when not in use Prevent accidents
• Don't overload circuits Prevent fires
• Use manufacturer's instructions Ensure proper operation
• Never touch metal objects during treatment Prevent shocks
• GFCI Protection

GFCI (Ground Fault Circuit Interrupter) outlets are safety devices that protect against electrical shock.

How GFCIs Work:

• Monitor current flow between hot and neutral wires
• Detect imbalance (current leaking to ground)
• Trip and shut off power in 1/40th of a second
• Prevent electrocution

Where Required:

• Near sinks and water sources
• Wet salon areas
• Anywhere water and electricity may mix
• Circuit Breakers

Circuit breakers protect against:

• Electrical overload
• Short circuits
• Fire hazards
• Action: Automatically shut off power when current exceeds safe levels

• Safety Precautions
• Before Using Electrical Equipment
• Check all equipment for damage or wear
• Read manufacturer's instructions
• Test equipment on yourself first
• Explain procedure to client
• Check for contraindications
• During Treatment
• Never leave client unattended
• Keep hands dry when operating equipment
• Don't touch metal while using electrical devices
• Monitor client comfort throughout
• Follow proper timing guidelines
• Contraindications for Electrical Treatments

DO NOT use electrical treatments on clients with:

• Condition Reason
• Pacemaker Can interfere with device
• Metal implants Can conduct electricity, cause burns
• Pregnancy Safety not established
• Seizure disorders May trigger seizures
• Heart conditions Risk of cardiac effects
• Open wounds/lesions Increased sensitivity, infection risk
• Inflammation/infection Can worsen condition
• Nervous conditions May be overstimulating
• Signs to Stop Treatment Immediately
• Burning or stinging sensation
• Excessive redness
• Client discomfort
• Equipment malfunction
• Any adverse reaction
• Electrical Terms for the Exam

• Term Definition
• Volt Unit of electrical pressure/force
• Amp (Ampere) Unit of electrical current strength
• Ohm Unit of electrical resistance
• Watt Unit of electrical power
• Conductor Material that allows current to pass (metal, water)
• Insulator Material that resists current (rubber, plastic)
• Electrode Applicator that delivers current to skin
• Anode Positive electrode (+)
• Cathode Negative electrode (-)
• Grounding Safety connection to the earth
• Equipment Maintenance
• Daily Practices
• Wipe down equipment after each use
• Check cords for damage
• Ensure proper storage
• Clean electrodes and attachments
• Regular Maintenance
• Follow manufacturer's service schedule
• Replace worn cords immediately
• Keep equipment clean and dry
• Document maintenance performed
• When Equipment Malfunctions
• Stop use immediately
• Unplug from power source
• Remove from service area
• Tag as out of order
• Have professionally repaired
• Never attempt DIY repairs