Injectable fillers are inert gels that occupy space, with no pharmacologic (drug) effect on the tissues. They also stimulate some collagen production within the injected areas, which creates additional useful volume. Fillers are made of hyaluronic acid, a naturally occurring substance that is present in our skin and tissues.


Fillers are most commonly injected into areas of volume deficiency caused by aging, which manifest as grooves, hollowing, and contour depressions in the face. When used in this way, fillers will restore lost volume and rejuvenate the face, making it look more youthful (because youthful faces do not exhibit these grooves, hollows and depressions).

When the right type of filler is injected into certain locations, it can even exert a powerful lifting effect on the cheeks, so that the net effect of the filler is not just “filling”, but “lifting and filling”.

When used to address the aging face, fillers are most commonly injected into the grooves below the lower eyelid (the tear trough), the upper cheek groove (malar groove), the laugh line (nasolabial groove), and the droopy corner of the mouth (marionette line). Other facial areas that can become hollow with age and which would also benefit from filler injections are the temples, the forehead and the sides of the cheeks.


Apart from rejuvenating the aging face, fillers can also be used to enhance the face when they are used to augment (add to) areas of primary volume deficiency (lack of volume not due to aging but due to genetic makeup). For example, the forehead can be made fuller and more rounded, the bridge of the nose can be made higher, the cheekbones can be made to look higher and fuller, the lips can be filled to give them more volume, and vertical length and forward projection can be added to the chin, all by filler injection.


Filler injections are non-invasive office based procedures completed under topical anesthesia with numbing cream. The fillers contain local anesthetic so this makes the injections even more comfortable. The results are immediately visible, since the effects of the filler are physical rather than pharmacological. Bruising and swelling can occur post-treatment, but Dr Huang takes specific technical measures to ensure that these side effects are either absent or mild. Hence, there is normally no downtime.

Since fillers are not permanent, they may need to be replenished every six to twelve months, depending on the type of filler and the area treated. This is because the filler gradually and naturally dissolves away in the tissues. However, after a few treatments, the interval between treatments tends to become longer.

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