The Magic of Oils For Skin Care
One of the key differences between conventional skin care and natural
or organic skin care is not the “active” ingredients such as green tea
or vitamin c, which excluding water may make up to about 5% of any
product, rather it lies with the base ingredients. In natural skin
care, the base ingredients are often a mix of vegetable oils and
butters or waxes in contrast to the synthetic ingredients often found
in conventional skin care.
The use of base oils has enormous benefit for the skin. Instead of
being an inert (non-active) synthetic carrier for the active
ingredients, base oils contain nutrients such as vitamins, minerals and
essential fatty acids that support and nourish the skin. I would go so
far as to count base oils as active ingredients in skin care. So, in
fact, in natural products up to 95% of any product has a supportive
“active” effect on the skin. In comparison, the synthetic base
ingredients in conventional skin care by enlarge, lack significant
therapeutic benefit.
There are many factors that affect the absorption of topical
ingredients into the skin and in reality, many topical creams just sit
on the surface of the skin, effectively plumping the superficial skin
cells but rarely having any effect on deeper layers. The skin is
designed to be selectively absorbent, being relatively permeable to fat
soluble substances and relatively impermeable to water and water
soluble substances. Fat soluble ingredients such as oils are absorbed
more effectively and have greater effect on the cell membrane and skin
matrix, supporting skin nourishment. As carriers, oils can also
transport essential oils, phytonutrients, vitamins and minerals into
the skin where they are most effective, rather than just having a
“surface” effect. In addition, oils also help prevent skin dehydration
by providing an effective water loss barrier which in turn leads to
plumper, more hydrated skin.
Oil absorption is influenced by the viscosity or thickness of the
individual carrier oil with thicker oils tending to be absorbed more
slowly through the skin. Generally fine light oils are preferable for
use on the face as they absorb quickly, easily penetrating the surface
layer of skin without leaving a greasy feel. Heavier oils are suitable
for dry facial skin, skin on the body, as bath oils and massage oils.
The degree of unsaturation will also impact on oil absorption. In
general, the more polyunsaturated fat content of the oil, the better
the absorption. For example Rose Hip oil is high in polyunsaturates and
has quite low viscosity, making it ideal for use in face serums and
creams as it absorbs quickly into the skin.
It is worth noting that cold-pressed oils tend to have a greater degree
of unsaturates than heat-extracted oils and for this reason are
preferable. The process of cold-pressing involves the nut or seed being
placed in an “expeller” which squeezes the oil out. There is some heat
created by friction however, it causes little damage to the oil or its
constituents. Heat-extraction uses temperatures up to 200 degrees
Celsius which dramatically increases the yield of oil, making it far
more cost effective but at the same time damaging the nutrient content
of the oil.
Unsaturated fatty acids are easily damaged by high temperatures and so
heat-extracted oils will have significantly lower levels. While these
oils are commonly used as cooking oils, they should be avoided for use
in skin care and aromatherapy as they lack the therapeutic benefits of
the cold-pressed versions.
A common misconception when it comes to the use of oils is that
applying them to the skin will only worsen oily skin and further create
congestion. Heavier oils may sit on the surface of the skin longer
before absorption, which is not ideal for already oily skin. However,
the lighter, less viscous oils will be absorbed quite quickly and in
many cases help to balance skin oiliness rather than contribute to it.
Oils are effectively absorbed into the skin rather than sitting on the
surface layer and therefore they are unlikely to cause or worsen
congestion. However, many natural skin care products rely on waxes and
butters as base ingredients. While enormously beneficial for the skin,
they are more likely to sit on the surface and therefore have a greater
likelihood of contributing if congestion is already an issue.
They are unlikely to cause congestion that wasn’t previously present
and the skin response really does depend on individual skin type. The
percentage of waxes to butters to oils will vary in different products
for different skin types. If you are unsure about what product to use
for your skin type, it is worth asking the manufacturer or supplier
which of their particular products will be most beneficial for your
skin type.
There a quite a number of nourishing carrier oils used in both skin
moisturizers and serums and the range of natural products available
that using nutritional base oils is ever increasing. Different oils are
suitable for different skin types so knowing some basic facts about
base oils will help you find the most suitable product for your skin.
Sweet Almond Oil –
A common used oil in skin care, it is rich in nutrition including
vitamin E, unsaturated fats and essential fatty acids. It has a
softening action on the skin and is useful for lubrication in massage
because while not a heavy oil, it is not absorbed rapidly.
Olive Oil –
A heavier oil, rich in monounsaturates including oleic acid. Extra
virgin olive oil come from the first pressing of the olives and is dark
green in color indicating the presence of antioxidant polyphenol. It is
suitable for use with dry skin as it helps stabilize the cell membrane
increasing the skins ability to hold onto moisture. Olive oil also
contains squalene, a hydrating and anti-inflammatory agent, ideal for
skin conditions such as psoriasis and eczema.
Tamanu Oil –
Tamanu oil has powerful healing properties in its unique ability to
promote the formation of new skin tissue. Traditionally used by the
Polynesians as first aid for the skin and mucous membranes, the oil can
assist with scars, burns, skin cracks, cuts, dry skin and wounds. Used
cosmetically, Tamanu has healing, mild antibiotic and anti-inflammatory
activity 2. For these reasons it is used in both protective and
regenerative products aimed at restoring skin appearance.
Evening Primrose Oil –
Evening Primrose Oil (EPO) is a valuable source of gamma linoleic acid,
an essential fatty acid with potent anti-inflammatory effects. Useful
for dry, damaged, sensitive skin EPO helps to maintain the skin’s
normal barrier functions. It is also useful topically for eczema and
psoriasis.
Rosehip Oil – With
up to 80% essential fatty acid content, Rosehip oil is very fine and
quite easily absorbed by the skin. Rosehip encourages regeneration and
repair of the skin and is renowned for its skin benefits, particularly
in the treatment of scars and burns. It is also known for its
rehydrating effect as well as improving dry, aged and wrinkled skin.
Jojoba Oil –
Actually a fine wax rather than an oil, Jojoba oil is very fine in
consistency and readily absorbed by the skin. It is light and
non-greasy and for this reason it is ideal in face serums and creams.
Jojoba closely resembles the sebum of the skin and so is beneficial for
skin and scalp problems such as psoriasis and eczema. With excellent
emollient properties it is moisturizing, healing and suitable for all
skin types.
Coconut Oil –
One of the heaviest and most stable oils, coconut is ideal for hair and
body application. With moisturizing and softening properties it is
ideal for dry and rough skin. Coconut oil also has cooling properties
and so is useful for after sun care products 1.
Avocado Oil –
Strong in color and dour, avocado oil is not to everyone’s liking for
skin care. However, in its unrefined form it is rich in lecithin,
vitamin D, E and A which offer useful sun protection and skin
nutrition. Avocado oil is beneficial to drier skins.
Sea Buckthorn Oil –
Bright orange in color, Sea Buckthorn oil is rich in beta carotene and
second only to Rose Hip in vitamin C content. It is also very rich in
essential fatty acids. This rich combination of nutrients mean it is
extremely beneficial as a base oil in skin care. With moisturizing,
anti-inflammatory and restorative properties, it is easily absorbed and
useful for all skin types.
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