Unit quiz: Regulated products and specialised surfaces: law, filters, devices, nails and lips

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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.

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Question 1

A learner reads that an emulsifier in her moisturiser is 'banned in Europe' and concludes that the product, bought in the United States, must be unsafe. She asks whether she should throw it away. What is the accurate reading of the claim?The claim needs the specific substance, its concentration and its legal status checked, because a prohibited-list entry is not the same as a measured risk and the two systems differ in both directions, with the EU permitting 29 UV filters against 17 in the United StatesBecause the European Union prohibits more substances than the United States, any product sold in the United States contains more hazardous ingredients and should be replaced

Question 2

A learner with melasma in the United Kingdom buys a United States sunscreen labelled SPF 50, broad spectrum, because it is half the price of her usual European product. She wants to know whether the protection is equivalent. What is the best appraisal?SPF 50 means the same protection in both markets, because sun protection factor is an international standard measured the same way everywhereThe SPF number is comparable but the UVA signal is not: United States broad spectrum is defined by a critical wavelength of at least 370 nm without a required UVA protection factor ratio, while the European frame requires a UVA protection factor of at least one third of the SPF and a label to show it

Question 3

A learner with moderate inflammatory acne wants to buy a home blue-light mask instead of the topical her clinician suggested, citing the mask's 'FDA approval' and a study in which 86 per cent of participants improved by at least one grade. How should this be assessed?Devices are cleared rather than approved, the cited study was a 7-week open-label sponsor-funded series of 30 participants, and the systematic review behind home LED use pooled six trials of short duration, so the mask is a possible adjunct rather than a replacement for treatment of moderate acneA clearance from the FDA establishes that the device works, and an 86 per cent response rate is high enough to replace a topical treatment

Question 4

After two years of gel manicures a learner develops itchy, red nail folds, lifting of two nail plates and a patch of eczema on both eyelids. She plans to switch to a 'hypoallergenic' gel brand. What is the correct reading?The eyelid eczema is unrelated to the nails because the products were never applied near the eyes, so the problem is probably a facial moisturiserThe distribution suggests methacrylate allergy with ectopic transfer from fingers to eyelids, 'hypoallergenic' gels may still contain hydroxyethyl methacrylate, and this needs patch testing and avoidance rather than a brand change

Question 5

A learner has applied a flavoured lip balm more than ten times a day for six weeks. Her lips peel, the corners are fissured and she reports that stopping the balm makes the dryness worse within a day. What is the appropriate plan?Replace the flavoured balm with a plain occlusive and a lip product with sun protection, stop licking, and treat fissuring at the corners as a reason to see a clinician, because angular cheilitis has causes that a balm cannot addressThe worsening on stopping proves the lips have become dependent on the balm, so she should continue and add a second moisturising product to break the cycle

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