Hello my beauties and welcome to the first 'proper' blog post!
I in this post I will be explaining what our skin is and how it carries out its functions. I think this is an important topic since if you understand how the skin works you will be in a better position to take optimum care of it...with rewarding results :). So, ladies I encourage you to read on...
The skin is the largest organ in the body and it covers and protects each and every underlying tissue and organ from bacterial invasion. It covers an area of around 1.2 - 2 metres squared and accounts for 12% of our total body weight.
Even during our sleep, the skin is continually working to help protect and regulate body processes to keep us healthy. Therefore it is important to get at least 8 hours of sleep each night...it is not called a beauty sleep for nothing! If the skin's natural protective functions are distorted, problems will arise.
Throughout our body, skin varies in thickness, being thicker in the palms of the hands and soles of the feet. Thick skin is called glabrous skin and is characterised by a greater number of tactile nerve endings, an absence of hair follicles and sebaceous glands (oil-producing glands) and also a thicker epidermis. It is thinner on the lips and eyelids...hence the delicateness of these areas. Thickened skin occurs due to friction and pressure as well as exposure. Cold sensations contract the skin whilst warm sensations relax it.
The skin is made up of 3 layers:
- Epidermis
- Dermis
- Sub-cutaneous fat
The epidermis
This is the uppermost layer of the skin also known as the superficial layer. It protects the deeper living tissues from bacterial invasion and harm from the external environment. The epidermis receives nourishment from a liquid known as
interstitial fluid. The epidermis can be divided into 5 layers, namely (top to bottom):
- Stratum Corneum ~ consists mainly of dead, flat flakes or keratin. These flakes are shed through a process known as desquamation. The life span of epithelial cells is between 32 and 36 days and about half of this time is spent in this layer.
- Stratum Lucidum ~ as the name suggests, this layer has a clear, almost transparent appearance. It is only a few cells thick and it is a water barrier zone. A clear substance called eledin fills the spaces between the cells in this layer.
- Stratum Granulosum ~ this layer is made up of living cells and as they move upwards, they are converted to keratin in a process known as keratinisation.
- Stratum Spinosum ~ known as the prickle cell layer due to the prickle-like threads that join the cells together.
- Stratum Basale ~ the deepest layer of the epidermis and cells receive their nourishment from the dermis and they are living cells. When skin is superficially damaged, it is repaired in this layer. In this layer, we find specialised cells called melanocytes. These cells secrete brown pigment called melanin and its production is controlled partly by genetic factors and part hormonal secretions. The function of melanin is to protect us from UV radiation injury and the more exposure, the more pigment is produced, that's why we tan in summer! One in every ten cells of the basal layer is a melanocyte. Absence of melanin gives rise to a condition known as albinism whose sufferers cannot stay in the sun due to totally white hair and skin & also pink eyes with poor vision.
The Dermis
This layer is located beneath the epidermis and is known as 'true skin'. It is a mass of connective tissue that contains blood vessels, lymphatic vessels, nerve and nerve endings, sweat galnds, hair follicles, small muscles and sebaceous glands. The bulk of dermal tissue is formed from
collagen. The dermis is divided in two layers, namely,
papillary layer and
reticular layer. The former supplies nutrients to the basal layer of the epidermis and due to the dense vascularity, provides warmth. The latter layer consists of yellow elastin fibres and strong reticular tissue. Elastin looses elasticity with age and excessive exposure to UV light, making the skin sag and appear wrinkled....always remember to wear sunscreen! If skin is stretched, the fibres rupture and leave scars commonly known as
stretch marks.
The Sub-cutaneous layer
This is really fatty tissue. It's function is to provide insulation to the skin as well as protect underyling organs from blows.
I hope you will find this post interesting and I look forward to answering any queries you might have.
Stay Beautiful,
Lara xoxo
10. Wet hair is very fragile so avoid tying it or brushing it. Instead use a plastic wide-toothed comb to prevent breaking it.
7. Coconut oil works wonders for dry/frizzy hair!
