TX Barber Scientific Concepts Flashcards
5 cards from real TX BAR practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 5 TX Barber Scientific Concepts flashcards as text
What is the primary function of the sebaceous glands in the skin?
Answer: To produce sebum
Sebaceous glands are microscopic exocrine glands in the skin that produce and secrete an oily or waxy substance called sebum. Sebum's primary function is to lubricate the skin and hair, preventing them from drying out and providing a protective barrier. This process is distinct from sweat production or body temperature regulation.
Which part of the hair is responsible for its color?
Answer: Cortex
The cortex is the thickest, middle layer of the hair shaft, situated between the cuticle and the medulla. This layer contains the melanin pigments, which are responsible for determining the natural color of the hair. The cortex also contributes significantly to the hair's strength, elasticity, and texture.
What is the primary purpose of using a disinfectant in a barbershop?
Answer: To kill harmful microorganisms
Disinfectants are chemical agents specifically formulated to destroy or inactivate harmful microorganisms, such as bacteria, viruses, and fungi, on inanimate surfaces and tools. In a barbershop, their primary purpose is to ensure sanitation and prevent the spread of infectious diseases between clients by properly sanitizing equipment. This is crucial for maintaining a hygienic environment.
Which of the following is a common symptom of an allergic reaction to a hair dye?
Answer: Itching and redness
Allergic reactions to hair dye, often a form of contact dermatitis, typically manifest as itching, redness, swelling, and sometimes blistering on the skin, particularly on the scalp, hairline, and ears. These symptoms are caused by the immune system's response to an allergen in the dye, such as paraphenylenediamine (PPD), and are distinct from general dry skin or hair loss.
What is the primary purpose of a patch test before applying hair dye?
Answer: To ensure the client is not allergic to the dye
A patch test, also known as a predisposition test, is a crucial safety measure performed at least 24-48 hours before a hair coloring service. A small amount of the dye mixture is applied to a discreet area of the skin to check for any adverse allergic reaction. This helps prevent severe allergic responses, such as itching, redness, or swelling, which can occur if a client is sensitive to the dye's ingredients.