CosBeauty Magazine #98

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SKIN The skin you’re in As the body’s largest organ and one of its most essential systems, the skin’s functions go far beyond the aesthetic. The skin regulates internal temperature; perceives external stimuli and transmits the information to the brain; protects from potentially harmful substances; and stores essential nutrients. Skin is comprised of three main layers – epidermis, dermis and hypodermis – all of which vary significantly in their anatomy and function.
EPIDERMIS The epidermis is the outer-most layer of the skin and continually renews and regenerates. Ultimately, all the cells in the epidermis originate from a single layer of basal cells in its basement membrane – these are called keratinocytes, which are stacked on top of each other to form several strata, melanocytes and dendritic cells. Keratinocytes develop in the basal layer and rise, losing their central nucleus and producing skin proteins called keratins and fats called lipids, before being shed from the surface of the skin as dead cells. As they move towards the surface of the skin, their form changes and they create distinct layers known – from the bottom up – as the basal layer, the spiny layer, granular layer, stratum and stratum corneum. In the spiny layer, the keratinocytes make lipid fat cells which discharge as the cells move up through the granular layer, forming a moisture-carrying mortar around the basal cells, which are now called corneocytes. These effectively dead and flattened cells form the protective outer layer of skin, which is worn away in a process known as desquamation. The entire process normally takes around 30 days – although sunburn, injury or cosmetically stripping the outer layer speeds the process. The stratum corneum retains moisture in the lower skin layers, comprising up to 15 percent water. Moisture loss is regulated by the lipids, while dead cells are cleared away by skin enzymes. Men tend to have a thicker stratum corneum than women; they tend to have more collagen and produce more sebum, making the lipid layer of their skin thicker and the cell renewal process slower. Melanocytes produce melanin, which contributes to skin colour and provides UV protection. Dendritic (or Langerhans) cells are involved in the immune system of the skin. They consume foreign materials that invade the epidermis and transfer out of the skin to stimulate an immune response. DERMIS Between the epidermis and the subcutaneous fat layer lies the dermis, which contains connective tissue and houses the arteries, hair follicles, lymph vessels, sensation receptors, sweat glands and veins. This thicker dermal layer is composed primarily of collagen, which is responsible for the strength and elasticity of the skin. It is held together by a protein called elastin that is produced by fibroblast cells. The dermis also contains moisture-storing glycoproteins and hyaluronic acid, which have the ability to attract and bind hundreds of times its weight in water. Here, collagen and elastin production decline with ageing. HYPODERMIS The hypodermis, also referred to as the subcutis, subcutaneous layer or superficial fascia, is the bottommost layer. As the deepest component of skin, the hypodermis is made up of a loose network of fat and collagen cells. It acts as a protective cushion and helps insulate the body by monitoring heat gain and heat loss. The thickness of this layer can vary significantly in individuals and in different parts of the body. CBM www.cosbeauty.com.au 57
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COSBEAUTY ISSUE 98 NOV-JAN 2023 HOW
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Page 12 and 13: @cosbeauty Beauty insider THE WHO
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Page 18 and 19: Editorial credit: Featureflash Phot
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Page 24 and 25: I have a confidence about my life t
Page 27 and 28: I was always looking outside myself
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Page 45 and 46: CARE Skincare brands have poured mi
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Page 53 and 54: LIPIDS Lipids are a large and diver
Page 55: 1. 2. DNA REPAIR DNA repair enzymes
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Page 61 and 62: ANTI-AGEING ANTI- WRINKLE SOLUTIONS
Page 63 and 64: HydraFacial has taken the beauty an
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Page 67 and 68: Fiorga Paris NCEF-Shot Supreme Poly
Page 69 and 70: MORE ABOUT THE BRAND SkinMTX is a d
Page 71 and 72: Colgate Optic White Pro Series Teet
Page 73 and 74: Physical and biochemical exfoliator
Page 75 and 76: INGREDIENTS Microcrystalline Cellul
Page 77 and 78: Xerjoff is an Italian perfume house
Page 79 and 80: SHOW-STOPPING FLACONS Having studie
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Page 89 and 90: WHAT ARE YOU MOST PASSIONATE ABOUT
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Page 95 and 96: Fillers QUICK FACTS • Used to add
Page 97 and 98: Skin tightening QUICK FACTS • Non
Page 99 and 100: HydraFacial QUICK FACTS • Gentle,
Page 101 and 102: How ALCOHOL AFFECTS your SKIN SKIN
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4. 3. 5. 6. 7. SOME OF THE MAKEUP W
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COOL summer LOOKS for a ot g rl h i
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PATIENT TESTIMONIALS, MINIMUM HYGIE
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KEY FINDINGS from the review In its
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Aussie docs say TIME TO ACT IS NOW
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WAYS TO ROCK THE MANICURE TREND, AC
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Christophe Robin Regenerating Mask,
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1. Happiness: Understanding this em
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CosBeauty Magazine #98

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