The needle is the traditional reference instrument for performing injections. Thin, hollow and rigid, it allows very precise injection into clearly defined areas, with excellent control over depth and the volume administered. The needle is particularly indicated for superficial wrinkles (fine lines around the mouth, crow\u2019s feet), precise anchoring points (a localised depression, a specific asymmetry, a bolus of product at a precise location).
It also allows small quantities of product to be deposited at multiple points or in a line, according to aesthetic needs.
The needle offers the advantage of maximum precision. It is particularly suitable for superficial, localised injections and can be used with all types of products. However, it can be slightly more painful than a cannula, carries a greater risk of bruising if a capillary is hit, and often requires several puncture points.<\/span><\/p>\nCannula injection<\/h2>\n
What is a cannula ? A cannula is a flexible instrument with a rounded (non-cutting) tip that slides through tissue planes while avoiding vessels and nerves. It does not pass through tissues by piercing them, which considerably reduces the risks of haematomas, bruising and vascular complications.
It is used for the cheekbones, tear troughs, dark circles, forehead, nose and sometimes lips, according to the doctor\u2019s preferences.
The cannula has several advantages : it causes less tissue trauma, is generally less painful, and requires fewer entry points \u2014 sometimes just one is enough to treat a large area. It also reduces the risk of intravascular injection. However, it is less suitable for superficial injections and lacks precision for highly targeted corrections. Its use also requires good technical proficiency to achieve an optimal result.<\/p>\n
The retrograde threading technique\u00a0<\/h2>\n
This is a widely used injection technique, with either a needle or a cannula. The principle is simple : the instrument is inserted to the desired plane, then the product is injected slowly as it is withdrawn. This method deposits the product evenly in a line, making it particularly suitable for treating nasolabial folds, marionette lines, tear troughs or the jawline. It also provides precise control over the volume injected and encourages smooth product integration.<\/p>\n
The bolus technique<\/h2>\n
A bolus involves injecting a defined quantity of product at a fixed point, often deeply (down to the periosteum). This method is used to create volume (cheekbones, chin, temples), increase the projection of a specific facial feature, or mechanically support a sagging skin plane.
A bolus requires careful product selection, generally a highly cross-linked product, and a thorough command of anatomy to avoid overcorrection or asymmetry.<\/p>\n
The fanning technique (or \u00abfanning\u00bb)<\/h2>\n
This technique is often performed with a cannula. It involves depositing the product in a fan pattern from a single entry point, making several passes in different directions while gradually injecting.
It is ideal for hollow cheeks, extensive areas, and treating diffuse sagging of the lower face.
The intended effect is comprehensive : a subtle, natural result distributed harmoniously.<\/p>\n
\u00abMicro-bolus\u00bb injections<\/h2>\n
The micro-bolus is a variation of the bolus, suited to highly mobile areas or where the skin is thin. It involves depositing very small quantities of product at regular intervals, often in the superficial dermis.
Used for lines around the mouth (barcode lines), cheek wrinkles, the eyebrow tail (a subtle lift), or during Skinbooster injections to hydrate without changing volume.
This technique requires considerable precision and a very fluid product to avoid irregularities.<\/p>\n
The \u00ab blanching \u00bb technique<\/h2>\n
\u00ab Blanching \u00bb (or whitening) is a technique that involves injecting the product very superficially, almost intradermally, until the skin becomes slightly white. This phenomenon reflects tension in the dermis, which gradually smooths over the following days.
This method is particularly indicated for fine lines, especially around the mouth and eyes, as well as thin, crepey skin or certain dynamic wrinkles that have become static. However, it is not always feasible because it carries a risk of the Tyndall effect, meaning a bluish reflection appearing beneath the skin.<\/p>\n
Superficial injection techniques for mesotherapy and Skinboosters<\/h2>\n
Although they are not intended to restore volume, Skinbooster or mesotherapy cocktail injections require a particular technique : superficial nappage or micro-papules. The doctor performs a series of superficial micro-injections, creating a fine grid across the treatment area.
This method is used on the face to restore radiance and hydration, on the neck and d\u00e9colletage to address thin, sagging skin, and on the backs of the hands to stimulate skin regeneration. It is well tolerated and primarily aims to improve tissue quality without changing volume.<\/p>\n
The importance of the injection plane : superficial, middle or deep ?<\/h2>\n
An essential classification of techniques is based on the plane in which the product is injected. This parameter influences the aesthetic result, treatment longevity, and safety.<\/p>\n
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