proteins, skin care and fragrances flash cards

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What are essential oils?

Back

Essential oils are concentrated extracts of volatile, non-water soluble aroma compounds from plants. They are mixtures of many different compounds and are defined by their characteristic fragrances.

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How are essential oils extracted?

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Essential oils are usually extracted by distillation or solvent extraction techniques.

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List some uses of essential oils.

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Essential oils are widely used in perfumes, cosmetic products, flavorings in foods, cleaning products, and aromatherapy.

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What are terpenes?

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Terpenes are key components of most essential oils. They are unsaturated compounds formed from joining together isoprene units.

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What is isoprene?

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Isoprene is 2-methylbuta-1,3-diene with the chemical formula C5H8.

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What is ultraviolet (UV) radiation?

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Ultraviolet (UV) radiation is a high-energy form of electromagnetic radiation present in sunlight.

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What effects does UV light have on molecules?

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Exposure to UV light provides sufficient energy for bonds to be broken within molecules, causing sunburn and accelerating skin aging.

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How does sun-block work?

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Sun-block applied to your skin prevents UV light from reaching the skin.

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What are free radicals?

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Free radicals are atoms or molecules with an unpaired electron, making them highly reactive.

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How are free radicals formed?

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UV light breaks bonds to form free radicals.