Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Pharmacy III COSMETIC SCIENCE Previous Question Paper (December-2019 - R17)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
Write about humectants used in cosmetics.
Answer
Humectants are hygroscopic substances used in cosmetics to retain moisture in the skin and hair by attracting water from the atmosphere or the deeper layers of the dermis. Common examples include glycerin, propylene glycol, sorbitol, and hyaluronic acid.
Write about rheology modifiers in cosmetics.
Answer
Rheology modifiers, or thickeners, are ingredients used to control the flow and consistency of cosmetic formulations. They improve the stability, texture, and application properties of products like lotions and gels. Examples include natural gums (xanthan gum), cellulose derivatives (hydroxyethyl cellulose), and synthetic polymers (carbomers).
List out the various antidandruff materials in shampoos.
Answer
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Write about face wash.
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Explain the role of henna in hair care.
Answer
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What is SPF? Explain about it.
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Write briefly about hair combing properties.
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Write about evolution of cosmeceuticals from cosmetics.
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Write about blemishes of skin.
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Explain about comedogenic.
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Part B
Write about basic structure of hair and hair growth cycle.
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Explain the classification of cosmetic products with examples.
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Write about the preservatives used in cosmetics.
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Write about the chemistry and formulation of Para-Phenylene diamine based hair dyes.
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Write the principle and formulation ingredients of conditioning shampoo.
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Explain the role of Aloe and turmeric in skin care, explain with examples.
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Explain the BIS specifications and analytical methods for shampoo.
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Write about the principle of corneometer, it’s applications and advantages of corneometer.
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Write about soaps and syndetbars.
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Explain about measurement of hair tensile strength.
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What is dry skin and causes leading to dry skin.
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Write about skin moisturization.
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Explain about deodorants with examples.
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Write about the causes of skin wrinkles and their treatment.
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