JNTU
JNTU B.Pharmacy III COSMETIC SCIENCE Previous Question Paper (January/February - 2023 - R17)
Question paper contains two parts, Part A, Part B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. 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
Name the common problems associated with the teeth.
Answer
Common problems associated with teeth include dental caries (cavities), gingivitis (gum inflammation), periodontitis, dental plaque accumulation, and halitosis (bad breath).
What are emollients and why they are used in cosmetics?
Answer
Emollients are cosmetic ingredients that soften, soothe, and smooth the skin by filling the spaces between skin cells. They are used in cosmetics to improve skin texture, prevent transepidermal water loss (TEWL), and enhance the spreadability and sensory feel of formulations.
What are hair conditioning agents? Give two examples.
Answer
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Why vanishing cream is called as foundation cream?
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Mention the uses of neem in cosmetics.
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Give the role of vitamin D in sun protection.
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Define cosmetics as per EU regulations.
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Write the principle of measuring the tensile strength of hair.
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What are the causes for hair fall?
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Give the mechanism of deodorants.
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PART B
How cosmetics are different from drugs? Give the classification of cosmetics based on the application and discuss their advantages and disadvantages.
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Explain the mechanism of humectants in cosmetics and write about different types of humectants.
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Give the structure of hair and its growth cycle.
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Name the products meant for skin care. How moisturizing creams are formulated?
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Explain the mechanism of hair dyeing process.
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Explain the formulation of medicated tooth paste.
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What are tooth whiteners and how they are useful? Explain.
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Mention the need for sunscreen protective cosmetics. Write about different sunscreen protective agents.
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Enumerate the role of aloe and turmeric in the cosmetics
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What is the significance of TEWL and how it is assessed? Explain.
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Write about the following:
Cosmeceuticals
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Syndet bars
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Write about the causes for the following and their prevention:
Hair and scalp
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Prickly heat and body odor.
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Explain the mechanism of action of antiperspirants and their preparation.
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