Cosmetology Test Electricity and Light Therapy 2 — Questions and Answers
Question 1: What type of electrode is used with a high-frequency machine for direct surface application to the skin?
- Bipolar metal paddle electrode
- Glass electrode filled with gas (Correct answer)
- Carbon fiber electrode
- Silicone-tipped electrode
Correct answer: Glass electrode filled with gas
High-frequency machines use glass electrodes filled with gases such as neon or argon, which glow and produce ozone when current passes through them during skin application.
Question 2: During desincrustation with galvanic current, which pole is placed on the client's face to soften and emulsify sebum in the pores?
- Positive pole (anode)
- Neutral pole
- Negative pole (cathode) (Correct answer)
- Alternating poles in sequence
Correct answer: Negative pole (cathode)
The negative pole (cathode) produces an alkaline chemical reaction that softens and emulsifies sebum, making it easier to remove clogged debris from pores.
Question 3: Before performing any electrical facial treatment, what client health condition must be screened for and is considered an absolute contraindication?
- Mild dry skin or seasonal allergies
- Presence of a pacemaker or metal implants (Correct answer)
- Recent use of topical moisturizer
- History of seasonal acne breakouts
Correct answer: Presence of a pacemaker or metal implants
Pacemakers can be disrupted by electrical currents, and metal implants can cause burns or interference; both conditions are absolute contraindications for electrical treatments.
Question 4: What physical effect does faradic current produce in the muscles during a facial treatment?
- Chemical decomposition of muscle tissue
- Passive involuntary muscle contractions (Correct answer)
- Hardening of collagen fibers
- Increased melanin production
Correct answer: Passive involuntary muscle contractions
Faradic current causes passive involuntary muscle contractions, which are used in facial toning treatments to firm and strengthen facial muscles without client effort.
Question 5: What does iontophoresis use galvanic current to accomplish during a facial service?
- Permanently remove unwanted facial hair
- Drive water-soluble ionic products deeper into the skin (Correct answer)
- Dry out and reduce oily skin secretions
- Generate heat to open the pores manually
Correct answer: Drive water-soluble ionic products deeper into the skin
Iontophoresis uses galvanic current to push water-soluble, ionically charged product molecules deeper into the skin than topical application alone can achieve.
Question 6: Which color high-frequency electrode, containing argon gas, is most appropriate for oily or acne-prone skin?
- Violet or purple electrode (Correct answer)
- Orange or red electrode
- Blue electrode
- Clear or white electrode
Correct answer: Violet or purple electrode
The violet or purple electrode contains argon gas and produces germicidal ozone, making it most effective for treating oily or acne-prone skin conditions.
Question 7: What is the primary overall benefit of incorporating electrical current modalities into professional facial treatments?
- Replacing cleansing and exfoliation steps entirely
- Enhancing product penetration and stimulating natural skin functions (Correct answer)
- Permanently altering skin pigmentation
- Eliminating the need for professional-grade skincare products
Correct answer: Enhancing product penetration and stimulating natural skin functions
Electrical current modalities enhance product absorption, stimulate circulation, tone muscles, and support skin cell activity, making treatments more effective overall.