The skin:
The skin is the largest organ of the body as it covers the entire surface – an area of between 1.2 and 2 square metres and accounts for approximately 12% of our body weight. It moulds to and moves with our body. It is our protective layer to cover our other vital organs. The skin has to be tough to protect us from constant chemical and physical assault yet sensitive and responsive to subtle changes in the internal and external environment.
Functions of the skin:
The functions of the skin can easily be remembered by the acronym SHAPES
S – SENSITIVTITY
H – HEAT REGILATION
A – ABSORPTION
P – PROTETION AND PRODUCTION OF VITAMIN D
E – EXCRETION
S – SECRETION
Sensitivity – Nerve ending s in the skin provide us information to our brains to detect touch, pain, heat and pressure
Heat regulation – The body temperature is maintained at an average of 36.8 degrees centigrade. The skins role in this is 3-fold:
Absorption – The hair follicles and sebaceous ducts are able to absorb moisture, thus keeping the skin supple. The skin also has the ability to absorb nicotine patches and products such as creams and emollients.
Protection – The is the skins prime function, in response to friction, the epidermis thickens so providing cushioning. It prevents the invasion of bacteria and acts as a waterproof barrier. It also produces melanin to protect the skin against harmful UV rays. It also protects us from invasion of foreign bodies and bacteria.
Excretion – The skin excretes waste material via the sweat glands.
Secretion – The sebaceous glands secrete an oily substance called sebum onto the surface of the skin. This creates an acid mantle over the skin, which is of great importance in limiting the activity of bacteria
Structure of the skin:
The skin consists of 3 main layers:
The epidermis:
This is the most superficial layer. It varies in thickness, being the thickest on the soles of the feet and the palms of the hand. It is significantly thinner on the face and thinner still on the delicate eyelids. The epidermis contains no blood vessels or nerves. It acts as the body’s main protective barrier, preventing water loss and providing some protection to external attack.
The epidermis may be divided into 2 zones:
The Horny Zone – contains 3 further layers. The upper most is called the Stratum Corneum, this is composed of cells that have no protective oils and if exposed to sunlight, will become dry and flaky. The outer layers of the dead cells is continually being shed.
The 2 lower layers of the horny zone are called the Clear layer or Stratum lucidum and the Granular layer or Stratum Granulosum. Both layers contain more moisture and link the living cells of the epidermis to the dead ones above
The Germinal Zone – This zone is divided into 2 layers. The first is the prickle layer it is also known as the spinosum layer
However, the most effective is the Basal or germinative layer. It is in this layer that the new epidermal cells are constantly being produced. The cells last about 6 weeks before being discarded into the horny layer. Contained in the basal or germinative layer is a substance called melanocytes, which is responsible for giving skin its colour. Melanocytes react to UV light by producing melanin to act as a barrier against UV light penetration causing the skin to darken (Tan)
The dermis:
The dermis is sometimes referred to as the true skin. The dermis is formed of tough, flexible, connecting tissue and contains the following:
Capillaries – fine blood carrying vessels which carry oxygen and nutrients to the skin and take away waste products such as carbon dioxide.
Lymph vessels – these drain away waste products from the cells and take them to a lymph node which filters foreign bodies from the clear fluid known as lymph then returns the lymph to the main circulation.
Sensory nerve endings – carry impulses to the brain
Sweat glands – otherwise known as sudorific glands. They are found all over the body. There are 2 types of sweat glands – Apocrine, which are found mainly in the groin and axillae (underarm) area. Their function is to regulate body temperature and eliminate waste materials. Usually Apocrine glands open into a hair follicle. The sweat generated by these glands mixes with bacteria on the skins surface and causes body odour.
The second type of sweat gland is known as the eccrine gland and is found all over the body. These glands excrete water and salt.
Sebaceous glands – they are found all over the body, usually open into a hair follicle. They secrete an oily substance called sebum which is responsible for keeping the skin moisturised and the hair soft. The amount of sebum secrete onto the skins surface determines whether the skin is dry, normal or oily.
The subcutaneous layer:
The subcutaneous layer separates the dermis from the underlying muscle and permits the skin to move easily over it. Contained within this layer are nerve endings, blood, lymph vessels and fat cells. The fat cells act as a store and are usually thicker in woman than men. The fat stores help to reduce heat loss from the body.
Label the skin structure below:
Skin types:
In order to select the correct products for the client’s skin, her skin should be carefully assessed before carrying out the treatment. Skin is usually described as balanced/normal, dry, oily, sensitive, combination
Balanced/normal:
Balanced skin has a good balanced of oil and water, therefore the skin is soft and supple. The pores of the skin are small, and the texture is fine and even. The skin will appear clear and clean and rarely will it develops spots or blemishes.
Dry:
Dry skin is caused by insufficient secretion of sebum. Dry skin has a matt uneven texture as there is insufficient sebum on the skins surface to lubricate it and keep the surface skin cells compacted as the greasy coating produced by sebum is absent the surface cells of the skin curl up and flake and natural moisture is lost from the upper layers of the skin.
Dry skin often has a fine texture and can look and feel tight. It will show fine lines and wrinkles, particularly around the eyes and mouth from quite a early age. Often, dry skin will also be sensitive and is likely to develop broken capillaries.
Oily:
Over secretion of sebum cases oily skin. The surface of the skin appears shin, thick and course. The pores of the skin will often be enlarged, and blackheads and spots are often present.
Oily skin may be aggravated by over-stimulating the sebaceous glands further by too harsh cleaning, over heating with a facial sauna or by a poor diet.
Sensitive:
Many skins are sensitive, but in beauty therapy this is used to describe extremely sensitive skin. Sensitive skins react to the most minor changes by flushing easily, causing redness, which may appear in patches. Sensitive skin often has permanently dilated capillaries
Combination:
A combination skin is most commonly a mixture of dry and oily skin types. Very often the cheeks, side of the face, around the eyes and neck area will be dry and the forehead, nose and chin will be dry.
Skin analysis:
Prior to carrying out a facial treatment, the client’s skin should be inspected and the condition of the skin record on the consultation sheet. A copy of the consultation sheet recommended for use is included at the back of this manual.
Explain to the client that you are going to examine their skin and record your findings. Make it clear to the client that this information s for your records only and in line with Data protection Act policies and procedures will be treated in the strictest of confidence.
Study the colour of the skin:
Study the skins texture:
Study the general condition of the skin:
As The skin is a living organ, its condition does change from season to season. It is a good idea to ask the client a few questions about their skin. This will help you with your diagnosis of the skin ad to give them relevant aftercare advice.
Ask the client:
Very often clients will ask you to recommend products for them to use at home to improve the skin care routines. An accurate skin diagnosis is essential before recommendations can be made. It is also important to understand the clients requirements and how much time, effort and money she is prepared to invest into skincare.
Skin Terminology
| Term | Definition |
| Elastin | Protein found in skin.
Provides bounce back Depletes with age- wrinkles After pregnancy , weight gain etc, saggy skin |
| Collagen | Fibrous protein
Connects and supports body tissues such as skin, muscles, bone, tendons and cartilage |
| Keratin | Strong protein, major component of skin, hair, nails and teeth
Made from amino acids and can be flexible and inflexible Most of the keratin we come into contact with is dead. |
| Amino acids | Building blocks of proteins which band together in chains
Ingested from food. Many different types |
| Adipose tissue | Cells capable of storing fat |
| Melanin | Also known as pigment, gives the hair and skin its natural colour.
In skin formed from cells called melanocytes. Albinism is a lack of melanin. Protects from harmful UV rays. |
| Cellulite | Pockets of fat trapped in the skin causing dimpling/orange peel effect. Forms in subcutaneous layer. |
| Osmosis | Passage of water from an area of high-water concentration through a semi permeable membrane to a region of low water concentration. |
| Osmoregulation | Regulation of the amount of water and mineral salts in the blood. Carried out by kidneys after direction from the hypothalamus. |
| Homeostasis | The balance or equilibrium of the body. The regulation of all the body’s systems. |
| Diffusion | Movement of molecules from an area of high concentration to a lower concentration |
| Dispersion | Scattering over an area |
| Dilution | Reduction of concentration |
Products/masks/peel:
A face mask removes surface dirt and dead cells from the skin. Masks can be used to stimulate and refine the skin, or to soothe and nourish, depending on the type of mask and the ingredients contained within it. A face mask act as a quick pick up, temporarily tightening the pores and firming the skin. It perks the circulation, soothes and relaxes facial muscles and makes the complexion appear brighter and fresher.
Mask can be setting or non-setting and. Non setting masks refresh and cool the skin. They are east to apply and remove and may be used to treat specific skin problems. Setting masks contain natural earth ingredients that draw out impurities from the skin. Setting masks dry on the skin and tend to be more difficult to remove, however they do make the skin feel very clean and fresh.
Different types of face masks:
There are a wide range of face masks available on the market, from skin care brands to basic ingredients and now more advanced to chemical peels. The four basic masks are:
Clay masks and lotions are mixed together to form the mask. This is a very flexible, cost effective way of offering tailor made masks to suit your clients’ needs. It is possible to make setting and non-setting masks to suit any skin type using these ingredients.
Clay ingredients:
Kaolin – A white powder, it has a drawing effect which is deep cleansing and is useful for bringing spots and skin blockages to a head.
Fullers Earth – A green/grey powder. Very absorbent and cleansing. Ideal for oily skins with blackheads.
Magnesium Carbonate – A white, fine powder, mildly astringent, tightens pores and softens the skin.
Calamine – A pink powder, produces a soothing action which reduces high colouring and soothes the skin.
These clays are mixed with a suitable lotion to form a creamy paste.
The most common lotions used are:
Peel-off masks:
These are purchased ready-made and are based on waxes, such as paraffin wax, gums, latex or plastic resins which are applied wet but dry out on the skin forming a film. This type of mask promotes the skin to sweat and increases the amount of surface moisture. They are deep cleansing and stimulate the blood supply, making the skin go slightly pink. Peel-off masks have a milder effect than clay masks. They are easy to remove as they are designed to peel off in one piece.
Thermal masks:
The ingredients contained within these masks generate heat, which warms the skin. This type of mask has a powerful deep cleansing, stimulating and tightening effect in the skin. Creams may be applied underneath the mask- the heat produced by the mask will encourage effective absorption of the cream. As this mask sets hard, clients who are nervous or claustrophobic are not suitable for this treatment.
Biological masks:
Biological masks are based on natural ingredients such as plant, flower o fruit extracts. Biological masks are gentle but very effective. The mask forms a film over the skin but does not dry. Biological masks are usually purchased ready-made.
Mask recipes
| Normal skin | 1 scoop of kaolin
1 scoop of magnesium Mixed with rosewater |
| Dry skin | 1 scoop of kaolin
1 scoop of magnesium Mixed with oil |
| Oily skin | 1 scoop of fullers earth
Mixed with witch hazel |
| Sensitive skin | 1 scoop of calamine
1 scoop of magnesium Mixed with rosewater or oil |
Facial products:
Cleansing Products
Soap: This is made from fat and lye, which is alkaline in its PH. It therefore tens to remove natural oil from the skin. However, there are many different types of soap – some are moisturising soaps for dry skin, medicated soaps for greasy skin and un-perfumed/hypoallergenic soaps for sensitive skins.
Soap less Cleansers: These are gentler on the skin than soap and can be recommended to those who do not feel clean unless they have soap and water on their face.
Cleansing milk: Suitable for many different skin types. Cleansing milks are an emulsion made from differing proportions of water and oil and are more suitable for removal of light water based make up.
Cleansing cream: Suitable for use on dry, dehydrated, mature or normal skin – NOT ON OILY SKIN. As an oily skin is particularly susceptible to spots, the use of oily/greasy products should be completely avoided. Spots feed on grease, so if extra grease is added to an already problem skin, the spots will increase.
Skin tonics/toners
Skin tonics: Suitable for normal, dry, dehydrated, sensitive and mature skins. They help to remove all traces of cleanser. Toning lotions have an astringent effect on the skin which cools and refreshes. Strong astringents temporality tightens the skin and make the pores appear smaller.
Toing lotions help to restore the acid balance of the skin and are applied to the skin between different stages within the facial treatment.
Exfoliants
To exfoliate means to peel off in scales or layers. All types of skin benefit from the weekly use of exfoliating products to brighten the complexion and refine the skin texture. Special skin treatments are more effective when applied after using an exfoliant.
Moisturisers
Moisturising cream: This contains a high percentage of oil and a low percentage of water. moisturise which is lost from the skin needs replacing quickly so that the surface of the skin is kept soft and smooth. The living cells in the deeper layers of the skin need water so they will not shrivel and die. Moisturising creams are suitable for mature, dry, dehydrated, normal and sensitive skins.
Liquid moisturiser/ Moisturising milk: This contains a high percentage of oil. It provides a lightweight protection to oily or blemished skins without adding greasiness.
Good advice for healthy balanced skin:
Facial procedure:
Cleansing routine:
Deep cleanse: