Skin Anatomy
What is the outermost layer of the skin?
The epidermis
What does LED stand for?
Light Emitting Diode
What does pH measure?
The acidity or alkalinity of a substance
What agency regulates esthetic devices in the U.S.?
The Food and Drug Administration (FDA)
What is acne caused by?
Overproduction of sebum, bacteria, clogged pores, and inflammation
What protein gives skin its strength and elasticity?
Collagen
What is the purpose of microcurrent therapy?
To stimulate muscle tone and improve facial contour
Is salicylic acid oil-soluble or water-soluble?
Oil-soluble
What is the term for written permission from a client?
Informed consent
Is eczema contagious?
No
What are the three main layers of the skin?
Epidermis, dermis, hypodermis (or subcutaneous layer)
What is one contraindication for microneedling?
Active acne, open wounds, or pregnancy (any one)
What is the primary benefit of hyaluronic acid?
Hydration; it attracts and retains moisture in the skin
How often must you sanitize tools in a professional setting?
After every client/use
What is the medical term for a fungal infection?
Tinea
Which layer contains melanocytes?
The basal layer (stratum basale)
What type of acid is commonly used in a medium-depth chemical peel?
Trichloroacetic acid (TCA)
What is a contraindication for using retinol?
Pregnancy, rosacea, or sensitive skin (any one)
Can a master esthetician diagnose a skin condition?
No
What condition is characterized by visible blood vessels on the face?
Rosacea
What is the function of the stratum corneum?
Protection — acts as a barrier against pathogens and water loss
What is lymphatic drainage and why is it used?
A technique to encourage the flow of lymph fluid, used to reduce puffiness and support detoxification
What is the difference between AHA and BHA?
AHAs are water-soluble and exfoliate the surface; BHAs are oil-soluble and penetrate pores
What are the consequences of performing treatments without proper licensure?
Fines, loss of license, legal action, or being shut down
What is a disorder that would contraindicate the use of high-frequency?
Epilepsy, heart conditions, or pacemakers (for electrical high-frequency devices)