Electricity and Light Therapy Flashcards
7 cards from real Cosmetology Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Electricity and Light Therapy flashcards as text
Which type of light therapy produces heat that penetrates the skin to increase circulation and relieve muscle tension?
Answer: Infrared light
Infrared light produces deep-penetrating warmth that dilates blood vessels, increases circulation, and relieves muscle pain and tension in treated areas.
In a cosmetology setting, ultraviolet (UV) light is most commonly used for which purpose?
Answer: Sanitizing tools and surfaces in the salon
UV light is used as a sanitizing agent in cosmetology to reduce bacteria, mold, and viruses on implements and work surfaces.
According to the inverse square law of light, what happens to light intensity when the distance between the light source and the skin is doubled?
Answer: Intensity decreases to one-quarter of the original
The inverse square law states that light intensity is inversely proportional to the square of the distance, so doubling the distance reduces intensity to one-quarter.
Red light LED therapy is most commonly used in cosmetology for which skin benefit?
Answer: Stimulating collagen production and reducing fine lines
Red light therapy stimulates fibroblasts in the dermis to produce collagen, making it an effective anti-aging treatment for reducing fine lines and improving skin firmness.
Blue light LED therapy is primarily used in cosmetology to address which skin condition?
Answer: Acne and oily, blemish-prone skin
Blue light therapy targets and destroys Propionibacterium acnes (P. acnes), the bacteria responsible for acne, making it effective for oily and blemish-prone skin.
What is the most critical safety precaution required whenever light therapy equipment is used during a facial treatment?
Answer: Protect both the client's and practitioner's eyes with appropriate goggles or opaque eye pads
Eyes must always be shielded during light therapy because UV and high-intensity visible light can cause serious, permanent damage to the retina and surrounding eye structures.
What is the primary use of a Wood's lamp in a cosmetology or esthetics setting?
Answer: To analyze skin conditions by revealing them under ultraviolet light
A Wood's lamp emits UV light that causes different skin conditions—such as dehydration, hyperpigmentation, and bacterial infections—to fluoresce in different colors, aiding in skin analysis.