Cosmeceuticals — MCQs

Which of the following are treatment options for acne vulgaris?

Most common side effect of retinoids is

Benzoyl peroxide acts in acne vulgaris by:

A 35 years old female presented with acne. She was treated for her acne but after the treatment, she developed pigmentation. Which drug is responsible for hyperpigmentation?

A young boy with oily skin presents with acne as shown. What is the appropriate treatment?

Which of the following is not true about hydroquinone?

A cosmetic dermatologist plans to introduce microneedling radiofrequency for acne scars. Which parameter combination would provide optimal collagen remodeling with minimal risk of thermal injury in Fitzpatrick type IV skin?

A patient treated with Q-switched Nd:YAG laser for nevus of Ota develops paradoxical darkening after 4 weeks. What is the most likely explanation for this phenomenon?

A 42-year-old woman develops sudden onset vision loss in one eye 2 hours after hyaluronic acid filler injection in the glabella. Fundoscopy shows retinal whitening. What is the underlying pathophysiology?

A 28-year-old patient undergoes 70% glycolic acid peel for acne scars. Two hours post-procedure, he develops severe burning and erythema. What is the most appropriate immediate management?