Practice Test GeeksCosmetology Test Practice Test
← All Cosmetology Test Flashcard Decks

Scientific Concepts 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 Scientific Concepts flashcards as text

  1. Which pigment gives hair its color and is produced by melanocytes?

    Answer: Melanin

    Melanin is the pigment produced by melanocytes in the hair bulb that determines natural hair color.

  2. What is the term for the ability of the hair to absorb and retain moisture?

    Answer: Porosity

    Porosity refers to the hair's ability to absorb and hold moisture, determined by the condition of the cuticle layer.

  3. Which part of the electromagnetic spectrum is responsible for causing sunburn?

    Answer: Ultraviolet rays

    Ultraviolet (UV) rays from the sun penetrate the skin and cause sunburn, premature aging, and increased risk of skin cancer.

  4. What is the primary purpose of a conditioner's acidic pH (4.5–5.5)?

    Answer: To close the cuticle and smooth the hair

    The slightly acidic pH of conditioners causes the cuticle scales to contract and lie flat, resulting in smooth, shiny hair.

  5. What does the term 'volatile' mean when describing a chemical used in cosmetology?

    Answer: Easily evaporates at room temperature

    A volatile substance evaporates quickly at room temperature, which is important when working with solvents and nail products.

  6. The arrector pili muscle is responsible for which skin phenomenon?

    Answer: Goosebumps

    The arrector pili is a tiny muscle attached to each hair follicle that contracts in response to cold or fear, causing goosebumps.

  7. Which type of water hardness is caused by dissolved calcium and magnesium bicarbonates that can be removed by boiling?

    Answer: Temporary hardness

    Temporary hardness is caused by calcium and magnesium bicarbonates, which precipitate out when water is boiled.