Step2Study

NIC Cosmetology Written (Theory) Exam practice questions

200 free questions with answers and explanations.

Practice test
  1. 101.When performing a chemical service that requires a specific pH level for optimal results, a cosmetologist needs to understand how to adjust the acidity or alkalinity of a solution. Which of the following pH values indicates a solution that is alkaline?Scientific Concepts
  2. 102.A cosmetologist is explaining the structure of the hair to a client. They mention that the hair shaft is primarily composed of dead, keratinized cells. Which of the following protein is the main component of hair?Scientific Concepts
  3. 103.A cosmetologist is preparing to perform a manicure service. During the client consultation, the client mentions they have recently experienced sudden, unexplained patches of hair loss on their scalp, which have since resolved. Which of the following conditions is most likely being described by the client?Scientific Concepts
  4. 104.A cosmetologist is preparing a disinfectant solution for general use in the salon. The disinfectant product label states a dilution ratio of 1:128. If the cosmetologist needs to prepare 2 gallons of solution, how much disinfectant concentrate should be used? (Note: 1 gallon = 128 fluid ounces)Scientific Concepts
  5. 105.A cosmetologist is preparing to apply a hair color product that contains hydrogen peroxide. The hydrogen peroxide acts as an oxidizing agent in the hair coloring process. What is the primary role of an oxidizing agent in this context?Scientific Concepts
  6. 106.A cosmetologist is performing a hair analysis for a client who desires a chemical treatment. The cosmetologist notes that the client's hair feels rough, absorbs water quickly, and appears dull. What characteristic of the hair is the cosmetologist primarily assessing?Scientific Concepts
  7. 107.A cosmetologist is evaluating a client's skin. The client exhibits skin lesions characterized by small, fluid-filled blisters that appear in clusters, often accompanied by itching or burning. This condition is contagious and commonly recurs. Which skin condition is the client most likely experiencing?Scientific Concepts
  8. 108.A cosmetologist is performing a chemical exfoliation treatment. The treatment uses an alpha hydroxy acid (AHA) to gently remove dead skin cells from the outermost layer of the epidermis. Which layer of the skin is primarily affected by this treatment?Scientific Concepts
  9. 109.A cosmetologist is explaining the importance of proper blood circulation to a client during a facial massage. Which type of blood vessel is responsible for carrying deoxygenated blood back to the heart?Scientific Concepts
  10. 110.A cosmetologist is performing a facial and notes that the client has several small, non-inflamed, white-to-pearl-like bumps, typically found around the eyes, cheeks, and forehead. These bumps are firm to the touch and do not have a visible opening. What is this common skin condition?Scientific Concepts
  11. 111.A cosmetologist is explaining the importance of the acid mantle to a client. What is the primary function of the acid mantle on the skin?Scientific Concepts
  12. 112.Which of the following describes the process by which bacteria divide and multiply, resulting in two identical daughter cells?Scientific Concepts
  13. 113.A cosmetologist is preparing a client for a facial. The client has an infection characterized by an infestation of parasitic mites that burrow under the skin, causing intense itching and red papules or vesicles, often in a linear pattern. What condition does the client exhibit?Scientific Concepts
  14. 114.A client presents with thick, discolored (yellow-brown), and brittle toenails. The nails also appear crumbly and may separate from the nail bed. What nail condition does the cosmetologist suspect?Scientific Concepts
  15. 115.A cosmetologist is performing a pedicure service. Which bone forms the heel of the foot?Scientific Concepts
  16. 116.A client is experiencing significant hair loss, characterized by round or irregular patches where the hair has completely fallen out, leaving smooth skin. The cosmetologist notes there is no inflammation or scaling. This condition is most likely:Scientific Concepts
  17. 117.A cosmetologist is explaining the benefits of a conditioning treatment to a client whose hair is often dry and brittle. Which of the following statements best describes the primary function of the cortex layer of the hair in relation to its strength and elasticity?Scientific Concepts
  18. 118.A cosmetologist is conducting a client consultation for a hair coloring service. The client mentions they have a recurring condition characterized by dry, silvery scales that appear on their scalp, sometimes with redness and itching, but it is not contagious. Based on this description, the client likely has:Scientific Concepts
  19. 119.A cosmetologist is preparing to mix a disinfectant solution. The label states a 1:10 dilution ratio. If the mixing container holds 160 ounces, how much disinfectant concentrate is needed?Scientific Concepts
  20. 120.A client comes to the salon for a nail service. Upon inspection, the cosmetologist observes small, pinpoint depressions (pits) on the client's nail plate, along with some discoloration and thickening. These symptoms are most indicative of which nail disorder?Scientific Concepts
  21. 121.A cosmetologist is performing a facial service. They are applying a product that contains an alpha hydroxy acid (AHA) to exfoliate the client's skin. Which of the following layers of the epidermis is the outermost protective layer, composed of dead, keratinized cells, and is primarily targeted by superficial exfoliation treatments?Scientific Concepts
  22. 122.A client is experiencing significant hair loss, characterized by round or irregular patches on the scalp, with smooth, sometimes shiny skin in the affected areas. There are no signs of inflammation or scarring. What condition does the cosmetologist most likely observe?Scientific Concepts
  23. 123.A cosmetologist is preparing to perform a chemical perm service. Before applying the waving lotion, they must ensure the client's hair has been properly shampooed and rinsed. Which type of chemical bond in the hair is primarily responsible for maintaining the hair's natural curl pattern and is broken and reformed during a perm service?Scientific Concepts
  24. 124.A client is experiencing a severe allergic reaction to a new hair color product, exhibiting symptoms such as difficulty breathing, swelling of the face and throat, and a rapid, weak pulse. What is the immediate and most critical action a cosmetologist should take?Scientific Concepts
  25. 125.A cosmetologist is performing a chemical peel service. The peel uses an alpha hydroxy acid (AHA), which works by dissolving the intercellular cement that binds cells together. Which layer of the epidermis is primarily targeted by this action to achieve exfoliation?Scientific Concepts
  26. 126.A client is experiencing an allergic reaction to a new hair product, characterized by localized redness, itching, and swelling on the scalp. Which type of inflammation is this client most likely experiencing?Scientific Concepts
  27. 127.A client is concerned about their hair appearing dull and feeling rough. A cosmetologist performs a hair analysis and determines that the outer layer of the hair, which protects the inner structure and determines porosity, is damaged. Which part of the hair structure is the cosmetologist referring to?Scientific Concepts
  28. 128.A cosmetologist is explaining the importance of the acid mantle to a client. What is the primary function of the acid mantle on the surface of the skin?Scientific Concepts
  29. 129.During a client consultation, a cosmetologist identifies a skin lesion that is a small, elevated, circumscribed lesion containing fluid or pus, but no visible blood. Which of the following terms best describes this type of lesion?Scientific Concepts
  30. 130.A cosmetologist is performing a hair analysis and notes that the client's hair has a low porosity. What does this characteristic indicate about the hair's ability to absorb moisture and chemicals?Scientific Concepts
  31. 131.A cosmetologist is preparing to perform a chemical service that requires the use of a disinfectant. Which of the following is the most appropriate term for a chemical agent that destroys most bacteria, fungi, and viruses on surfaces, but not bacterial spores?Scientific Concepts
  32. 132.A cosmetologist is preparing to use a new disinfectant concentrate in the salon. The manufacturer's instructions state that the concentrate should be diluted at a ratio of 1:128. If the cosmetologist needs to prepare 1 gallon of disinfectant solution, how much disinfectant concentrate should they use?Scientific Concepts
  33. 133.A cosmetologist is preparing to perform a facial service on a client. The client has several small, raised, flesh-colored lesions on their neck that appear to be skin tags. What is the most appropriate action for the cosmetologist to take?Scientific Concepts
  34. 134.A cosmetologist is performing a facial on a client who has a small, non-inflamed, white or yellowish papule, often found around the eyes or on the cheeks. The client describes it as a 'tiny bump' that doesn't go away easily. This condition is most likely a:Scientific Concepts
  35. 135.A cosmetologist is explaining the importance of proper cleaning and disinfection protocols to a new employee. They emphasize that any tool that comes into contact with blood or other potentially infectious materials must be cleaned and then sterilized. Which level of decontamination destroys all microbial life, including spores?Scientific Concepts
  36. 136.A cosmetologist is performing a pedicure service. Which of the following bones is located in the foot and is commonly known as the heel bone?Scientific Concepts
  37. 137.A cosmetologist is observing a client's scalp during a hair service. The client has an infestation characterized by small, wingless insects that feed on human blood, causing intense itching and small red bumps. Tiny, white, oval-shaped eggs are also visible, firmly attached to the hair shafts. What condition is the cosmetologist observing?Scientific Concepts
  38. 138.Which of the following describes the process by which bacteria divide and multiply?Scientific Concepts
  39. 139.A cosmetologist is reviewing the ingredients of a new shampoo. One of the key ingredients is a surfactant. What is the primary function of a surfactant in a shampoo or cleansing product?Scientific Concepts
  40. 140.Which type of immunity is developed after the body is exposed to a pathogen and produces its own antibodies?Scientific Concepts
  41. 141.A cosmetologist is explaining the importance of proper blood circulation to a client during a facial massage. Which type of blood vessels are responsible for carrying oxygenated blood away from the heart to the rest of the body?Scientific Concepts
  42. 142.Which of the following describes a substance that has a pH of 8.5?Scientific Concepts
  43. 143.A cosmetologist is explaining the structure of the nail plate to a client. Which component of the nail is directly responsible for producing the nail plate?Scientific Concepts
  44. 144.A client complains of brittle nails that split easily. Upon inspection, the cosmetologist notices several lengthwise ridges and a general lack of flexibility. This condition is known as:Scientific Concepts
  45. 145.A client presents with a persistent, itchy, red rash on their scalp, accompanied by silvery scales. The cosmetologist observes that the scales are thick and well-defined. What scalp condition does this most likely indicate?Scientific Concepts
  46. 146.Which of the following chemical reactions involves the combination of two or more substances to form a more complex substance?Scientific Concepts
  47. 147.A cosmetologist is analyzing a client's hair and notices that it is very fine and lacks elasticity. This client is considering a chemical texture service. To determine the hair's ability to stretch and return to its original length, the cosmetologist should perform a test for which hair property?Scientific Concepts
  48. 148.A cosmetologist is preparing to disinfect a variety of tools after a service. The disinfectant label specifies a 1:10 dilution ratio with water. If the cosmetologist needs to prepare 120 ounces of disinfectant solution, how much concentrated disinfectant product is required?Scientific Concepts
  49. 149.A cosmetologist is preparing to perform a facial service. During the client consultation, the client mentions they have recently experienced an outbreak of small, fluid-filled blisters that crust over. The cosmetologist identifies these as a highly contagious viral infection. What condition does the client most likely have?Scientific Concepts
  50. 150.When performing a chemical service like a perm, a cosmetologist accidentally spills a small amount of permanent waving solution on their skin. What is the immediate and most appropriate first aid response?Scientific Concepts