Antiperspirants & Deodorants: Skin Care Lecture
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Questions and Answers

What is the main cause of body odor?

  • Inhibition of sweat production at the glandular level
  • Formation of a plug in the sweat duct
  • Sterile and odorless sweat discharge
  • Sweat rich in organic materials (correct)
  • How do deodorants work to reduce body odor?

  • Form a plug in the sweat duct
  • Inhibit enzyme involved in bacterial action (correct)
  • Reduce sweat production at the glandular level
  • Inhibit oxidation of fatty acids
  • What is the primary function of antiperspirants?

  • To form a plug in the sweat duct
  • To inhibit oxidation of fatty acids
  • To inhibit enzyme involved in bacterial action
  • To reduce sweat production at the glandular level (correct)
  • What type of agents are commonly used in deodorants to inhibit bacterial growth?

    <p>Antibacterial cationic agents</p> Signup and view all the answers

    What type of sweat is rich in organic materials and is an ideal substrate for bacterial growth?

    <p>Apocrine sweat</p> Signup and view all the answers

    What is the ideal substrate for bacterial growth that leads to body odor?

    <p>Sweat rich in organic materials</p> Signup and view all the answers

    What substance is often used as a propellant in aerosol sprays?

    <p>Butane</p> Signup and view all the answers

    Which type of aerosols form through gas-to-particle conversion?

    <p>Secondary conversion aerosols</p> Signup and view all the answers

    What is the purpose of adding fragrance to deodorant sticks?

    <p>To improve odor and appearance</p> Signup and view all the answers

    What is the role of alcohol in aerosol products?

    <p>To reduce staining of clothes</p> Signup and view all the answers

    Which substance is often used as a gelling agent in deodorant sticks?

    <p>Methyl cellulose</p> Signup and view all the answers

    What is the main purpose of the bulk waxy or fatty materials in deodorant sticks?

    <p>To form the stick matrix</p> Signup and view all the answers

    Why are thickening agents added to viscous liquid deodorants?

    <p>To prevent leakage from the ball head applicator</p> Signup and view all the answers

    What is the purpose of adding talc, starches, or other powders to deodorant sticks?

    <p>To give the product a dry feel</p> Signup and view all the answers

    Study Notes

    Body Odor and Its Causes

    • Body odor primarily arises from the interaction between sweat and bacteria on the skin.
    • Apocrine sweat, produced in certain areas like armpits, is rich in organic materials, making it an ideal substrate for bacterial growth.

    Deodorants and Antiperspirants

    • Deodorants work by neutralizing odor and inhibiting bacterial growth, typically through the use of antimicrobial agents.
    • Antiperspirants primarily reduce sweat production by blocking sweat glands, thus minimizing moisture for bacteria to thrive.

    Inhibitory Agents in Deodorants

    • Common agents used in deodorants to inhibit bacterial growth include triclosan, zinc salts, and alcohol.

    Sweat Composition and Bacterial Growth

    • Apocrine sweat contains organic compounds that serve as a food source for bacteria, leading to body odor.
    • The ideal substrate for bacterial growth associated with body odor is organic-rich sweat.

    Aerosol Products and Their Components

    • Propellants like hydrofluorocarbons (HFCs) or compressed gases are commonly used in aerosol sprays.
    • Aerosols can form through gas-to-particle conversion, allowing for the dispersion of particles in the air.

    Fragrance and Alcohol in Deodorants

    • Fragrance in deodorants serves to mask body odor and provide a pleasant scent.
    • Alcohol acts as a solvent and antimicrobial agent in aerosol products, helping to dry quickly and sanitizing the area.

    Gelling Agents and Bulking Ingredients

    • Gelling agents, such as carbomers, are used in deodorant sticks for texture and stability.
    • Bulk waxy or fatty materials in deodorant sticks help to solidify the product and provide a smooth application.

    Function of Thickening Agents and Powders

    • Thickening agents are added to viscous liquid deodorants to improve consistency and prevent separation.
    • Talc, starches, or other powders are incorporated into deodorant sticks to absorb moisture and enhance the product’s skin feel.

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    Description

    Learn about the definition and functions of antiperspirants & deodorants, the different forms available, foot care products, and the types of sweat glands. Understand how these products work and their impact on sweat and body odor.

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