Hyaluronic acid injection has become one of the leading products in aesthetic medicine in the last 20 years, with nearly 2 million injections every year in the USA. This filling product helps to correct static wrinkles in the lower third of the face, providing a rejuvenated and refreshed face.
The causes: how do wrinkles appear?
The skin is structured in two anatomical layers: the epidermis represents the superficial non-vascularized part, resting on the dermis. This second underlying vascularized layer nourishes and supports the epidermis.
A wrinkle is defined as a persistent skin fold that can form in two distinct ways:
-The skin may wrinkle as a result of hypercontraction of the skin muscles: these are dynamic wrinkles or expression lines; -
The skin may wrinkle because the dermis loses volume with age, so that the epidermis "falls" into the fold: these are called static wrinkles or aging wrinkles..
Static wrinkles develop especially on the lower part of your face, from the age of 40.
- The wrinkles of the upper lip are the vertical wrinkles called still wrinkles of the sun, smoker's wrinkles or "barcodes" wrinkles: they give an impression of pout.
- Puppet wrinkles or bitterness folds extend between the corner of the lips and the chin. They provide a negative emotion of pout or disgust.
- Nasolabial wrinkles or nasolabial folds extend the valley of tears between the nose and mouth, affecting the entire lower part of the face with a severe or weary look.
These static wrinkles are all indicated by an injection of hyaluronic acid.
Concept: how does hyaluronic acid help to remove wrinkles?
Hyaluronic acid is a natural macromolecule found in all connective tissue, where it appears as an elastic and flexible gel in which fibers and cells are bathed.
This dermal hyaluronic acid (HA) gives the skin its softness, volume and hydration. HA is often compared to a sponge that captures water molecules.
An injectable hyaluronic acid will behave like a volumizing filler, with a more or less pronounced effect depending on the molecular weight of this HA.
By restoring thickness to the dermis, an HA injection lifts the epidermal tissue so that the epidermis tightens: the wrinkle or furrow is filled in. In addition, HA captures water and rehydrates the skin, improving its vitality and metabolism.
Some dynamic wrinkles, such as forehead wrinkles, can also be reduced with an injection of hyaluronic acid, although the treatment of choice remains a Botox (botulinum toxin) injection. The hyaluronic acid, which has little volume, will give to a hollowed-out bottom a little volume, which mechanically tightens the skin and smoothes out forehead wrinkles.
Depending on the case, your aesthetic doctor in New York will be able to choose either a large volume injection (1 ml syringe) distributed in 1 or several points, or a multitude of small injections to smooth and rejuvenate the skin, via mesotherapy for example. In this case, the practitioner prefers a low molecular weight HA that is not cross-linked. The moisturizing effect will help to tighten the tissues and have a "medical lifting" effect.
Indications: which wrinkles should be treated by hyaluronic acid injection?
An injection of resorbable hyaluronic acid is used to reduce all static wrinkles through its filling and volumizing effect, and also to reduce some dynamic wrinkles.
The practitioner selects each time the most appropriate therapy for each patient, to promote a natural result:
-Injection of hyaluronic acid on a single point, such as the filling of wrinkles in the naso-labial fold;
-Hyaluronic acid injections on several targeted points, to smooth the skin by restoring volume (oval of the face) or to fill in several static wrinkles with a harmonious appearance of the area;
-Injection of hyaluronic acid, to have a smoothing effect without a noticeable volumizing effect.
These anti-wrinkle injections are generally painless, a lidocaine-type local anesthetic being combined with hyaluronic acid in the syringe.
What are the results of an injection of hyaluronic acid on wrinkles?
If the result is noticeable immediately after your session, it will be optimal after 10 to 15 days, once the oedemas have been resorbed.
This facial rejuvenation effect is obvious after 8 to 18 months, as the hyaluronic acid will be progressively and naturally resorbed.
The before/after of an injection of hyaluronic acid is often spectacular.
Static wrinkles disappear with filler, the skin is rehydrated and the tissues tighten for a smooth and bright complexion.
Hyaluronic acid treatment of static wrinkles on the lower face transforms negative expressions of fatigue, disgust, severity or sadness into positive emotions, with a younger, fresher and more pleasing face.
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