Unit quiz: Active ingredients and tolerance

Check understanding, separately from reading

5 questions · 80% to pass · no timer. This quiz checks the lessons in this unit. These authored questions assess recognition and application of the taught distinctions, not professional qualification. You may review the lessons and retry. Repeat attempts reuse the question bank; a remembered answer is not proof of transfer to a new situation.

Saving a lesson records reading only. Previous lesson completions have not been converted into passing scores. You can continue reading without a pass; the assessment remains unpassed.

Question 1

Combining several exfoliating products produces persistent burning. Reducing irritation is more appropriate than assuming extra peeling means extra health.

Question 2

Scrubbing harder to remove “uncleanliness” can irritate acne-prone skin. Gentle care and evidence-based clinical advice address more than surface dirt.

Question 3

A prescription retinoid and a cosmetic retinol are not automatically interchangeable. Product directions and individual medical circumstances affect use.

Question 4

A flat dark mark remains after a blemish settles. It is not necessarily an active acne lesion, so repeating aggressive spot treatment may be unhelpful.

Question 5

A product causes no reaction on one small area, yet later irritates with repeated facial use. The preliminary trial was not a universal safety certificate.

Continuing does not mark this assessment passed.