Cosmetology Test Nail Care and Services 4 — Questions and Answers
Question 1: What nail condition appears as white spots or streaks on the nail plate and is usually caused by minor trauma to the nail matrix?
- Onychauxis
- Leukonychia (Correct answer)
- Melanonychia
- Beau's lines
Correct answer: Leukonychia
Leukonychia (white spots) results from minor trauma or injury to the nail matrix that disrupts normal keratinization of the nail plate.
Question 2: When applying a base coat, how many strokes are typically used for each nail?
- One stroke down the center only
- Two strokes on the sides followed by one down the center (Correct answer)
- Three strokes side by side from left to right
- Four overlapping strokes
Correct answer: Two strokes on the sides followed by one down the center
The standard three-stroke method — two side strokes then one center stroke — ensures even, complete coverage of the nail plate with base coat.
Question 3: Which ingredient in nail hardeners cross-links the keratin proteins in the nail plate to strengthen it?
- Calcium
- Formaldehyde (Correct answer)
- Biotin
- Vitamin E
Correct answer: Formaldehyde
Formaldehyde (and its safer derivative toluene sulfonamide/formaldehyde resin) cross-links keratin proteins, hardening the nail plate.
Question 4: What is the purpose of a nail primer in acrylic nail application?
- To add shine to the finished nail
- To improve adhesion between the natural nail and acrylic product (Correct answer)
- To prevent lifting at the free edge
- To fill in surface ridges before product application
Correct answer: To improve adhesion between the natural nail and acrylic product
Nail primer chemically bonds to both the natural nail plate and the acrylic polymer, dramatically improving adhesion and reducing lifting.
Question 5: A client wants a pedicure but has a small open blister on their heel. What should you do?
- Proceed with the pedicure but avoid the area
- Refuse the service and refer the client to a physician (Correct answer)
- Cover the blister with a bandage and proceed
- Apply antiseptic and continue the service
Correct answer: Refuse the service and refer the client to a physician
An open wound is a contraindication for pedicure services because it poses infection risk to the client and cross-contamination risk in the spa.
Question 6: What is 'backfilling' in the context of nail enhancements?
- Applying product into the gap at the cuticle area during a fill
- Removing the pink acrylic from the nail bed area and replacing it during a fill (Correct answer)
- Filling the underside of the free edge with clear acrylic
- Adding extra product to the stress area
Correct answer: Removing the pink acrylic from the nail bed area and replacing it during a fill
Backfilling involves removing the colored/pink acrylic from the nail bed area during a rebalance to eliminate the grown-out look and restore the smile line.
Question 7: Which layer of the nail plate is responsible for the nail's natural shine?
- The ventral (bottom) layer
- The intermediate (middle) layer
- The dorsal (top) layer (Correct answer)
- The nail bed layer
Correct answer: The dorsal (top) layer
The dorsal (top) layer of the nail plate is the hardest and most densely keratinized, giving the nail its natural shine and surface smoothness.
Cosmetology Test Nail Care and Services 4
What nail condition appears as white spots or streaks on the nail plate and is usually caused by minor trauma to the nail matrix?