5 Written questions
5 Matching questions
- What are anti-inflamatories?
- What are some natural preservatives?
- What is an Occlusive?
- What is Glycerin?
- What is collagen?
- a An alcohol obtained by saponification of fats and oils
- b Materials such as oils and waxes which cannot be penetrated by water. Occlusives are spread onto skin to form a film which shields it to slow and prevent moisture from evaporating. [http://www.californiabodycare.com/glossary/225_occlusive.html]
- c Grapefruit Seed Extract, Citric Acid, Tocopherol (Vitamin E), Rosemary Extract
- d Ingredients which soothe the skin and reduce inflammation.
- e Collagen is a protein fiber which gives structure to the skin. It can be thought of as the studs which form the basic structure of the skin and give it its framework.
5 Multiple choice questions
- Ceramides (Cera = wax) are lipids which form part of the skin barrier.
- A syrupy fatty alcohol formed by the saponification (the process of combining a fat and an oil to make soap through application of heat) of a fat and an oil. It is an excellent skin softener and humectant, and a very strong water binder. [Quizlet : Chapter 13 Skin Care Products by trujiloolga]
- Emollients, also commonly referred to as Moisturizers, are products that help to soften skin or to treat skin that has become dry. Most emollients are forms of oil or grease, such as mineral oil, squalene, and lanolin. They work by increasing the ability of skin to hold water, lubrication of the skin, and providing skin with a layer of oil to prevent water loss. [http://www.wisegeek.com/what-are-emollients.htm]
- Identical to a Blackhead, with the exception that a small amount of skin has grown over the follicle, resulting in the bump appearing white. [http://www.wisegeek.com/what-is-a-comedone.htm]
- A mixture of molecules (amino acids and salts) within the cells comprising the outermost layer of the skin. The molecules are hygroscopic [Greek. "hygro" = wet, "skopion" = to look at], attracting and absorbing water, thus hydrating the skin. [www.clinuvel.com]
5 True/False questions
What is the Cell Cycle? → The Epidermis [Gk. "epi" = over, "dermis" = skin] is the top layer of skin. When you look at someone's skin, you are looking at the very top layer, made of up of cells which reflect light. When the top layer is smooth, it reflects light evenly so that skin looks more uniform and radiant than when the surface is rougher. [Skin Type Solution, 18]
What is a Blackhead? → Blackheads (also called Comedones) are an accumulation of sebum, keratin, skin debris and bacteria within a hair follicle. Follicles in the skin become blocked with sebum, causing the follicle to widen, and collect dead skin cells and bacteria. Blackheads, in contrast to Whiteheads, are open to the air, causing the oils to oxidize, turning them brown (similar process to an apple browning with exposure to oxygen). [http://en.wikipedia.org/wiki/Comedo]
What are the 2 methods of preventing unwanted skin pigment formation? → The first is to inhibit the enzyme tyrosinase (enzyme responsible for the formation of melanin), preventing the formation of melanin. The second is to stop the transfer of color into the skin cells. [Skin Type Solution]
What are the 3 main components of the skin barrier? → Classic examples are petrolatum and lanolin. For sensitive skin, dimethicone and shea butter.
What is a humectant? → A substance that absorbs moisture [from Latin "umectare" = to moisen]