Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Pharmacy III COSMETIC SCIENCE Previous Question Paper (July/August - 2023 - R17)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
What is humectant? Give two examples.
Answer
A humectant is a hygroscopic substance used in cosmetic formulations to attract and retain moisture from the atmosphere or from deeper layers of the skin, thereby preventing dehydration. Examples include glycerin and propylene glycol.
Write a note on basic structure of skin.
Answer
The skin is composed of three primary layers: the epidermis, which is the outermost protective barrier; the dermis, a thick layer containing connective tissue, blood vessels, hair follicles, and sweat glands; and the hypodermis (subcutaneous layer), which consists of adipose tissue for insulation and energy storage.
What are teeth whitening agents? Mention two examples.
Answer
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Write about face wash.
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Why sun protection is necessary?
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Explain BIS specification for toothpaste.
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List out hair combing properties.
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Explain cosmetics as quasi and OTC drugs.
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Write the causes of body odor.
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Explain dermatitis.
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Part B
Give a detailed classification of cosmetic and cosmeceutical products with examples.
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Write the reason behind common problem of teeth and their remedies.
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Write about basic structure of hair with a neat diagram.
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Explain why inclusion of preservatives in cosmetic preparations is necessary with suitable examples.
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List out different types of creams used in cosmetics. Discuss about the raw materials used in the formulation of vanishing creams.
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Explain the application of vanishing creams in formulation of cosmecuticals.
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Explain the mechanism of hair dyes. Discuss the chemistry and formulation of Para-Phenylene diamine-based hair dyes.
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Give detail classification of sunscreens with examples. Elaborate on different dosage forms available for sunscreen products
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Explain the role of Aloe and turmeric in skin care products with examples.
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Write about the evolution of cosmeceuticals from cosmetics.
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How do you measure skin colour?
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What is TEWL? Mention the instrument used to measure TEWL. Explain its principle and working.
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What is dry skin and mention the causes leading to dry skin.
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Explain mechanism of action deodorants. Give examples.
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Discuss the causes of comedogenic and its treatment.
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Explain the role of skin moisture on the penetration of different agents through the skin.
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