CANS Cosmetic Injectables & Techniques — Questions and Answers
Question 1: What is the primary action of botulinum toxin when injected into facial muscles?
- Stimulates collagen production
- Relaxes muscle activity (Correct answer)
- Increases skin hydration
- Removes dead skin cells
Correct answer: Relaxes muscle activity
Botulinum toxin works by temporarily blocking the release of acetylcholine, which inhibits muscle contraction.
Question 2: Which filler type is most commonly used for volume restoration in cheeks?
- Calcium hydroxylapatite
- Hyaluronic acid (Correct answer)
- Polymethylmethacrylate
- Poly-L-lactic acid
Correct answer: Hyaluronic acid
Hyaluronic acid-based fillers are widely used due to their safety profile and reversibility.
Question 3: What is the best technique to minimize bruising during injectable treatments?
- Fast bolus injection
- Large-bore needle
- Massage the area beforehand
- Use slow, gentle injection with a fine needle (Correct answer)
Correct answer: Use slow, gentle injection with a fine needle
Using a slow injection technique with a small-gauge needle reduces trauma to blood vessels and minimizes bruising.
Question 4: Which area is considered high-risk for vascular occlusion when injecting fillers?
- Chin
- Glabella (Correct answer)
- Jawline
- Neck
Correct answer: Glabella
The glabella region has complex vasculature and limited collateral circulation, increasing the risk for vascular occlusion.
Question 5: Which product is used to reverse the effects of hyaluronic acid fillers?
- Saline solution
- Lidocaine
- Hyaluronidase (Correct answer)
- Botulinum antidote
Correct answer: Hyaluronidase
Hyaluronidase is an enzyme that breaks down hyaluronic acid, allowing correction of overfilling or complications.
Question 6: Which injection depth is typically used for botulinum toxin in the forehead?
- Intradermal
- Subcutaneous
- Superficial intramuscular (Correct answer)
- Deep intramuscular
Correct answer: Superficial intramuscular
Botulinum toxin is typically injected into the superficial muscle layer of the frontalis for effective wrinkle reduction.
CANS Cosmetic Injectables & Techniques
What is the primary action of botulinum toxin when injected into facial muscles?