Dr Yeung Yat Yin 楊逸言 醫生 skinhealth-beauty-info

What are Hyaluronic Acid Fillers? ( 甚麼是透明質酸填充劑? )

Dr Yeung Yat Yin ( 楊逸言 醫生 ) 2021-08-18

What are Hyaluronic Acid Fillers? ( 甚麼是透明質酸填充劑? )


During the aging process, not only the collagen in the dermis will continue to lose, but also the underlying tissues such as fat, muscle and bone will degenerate, resulting in atrophy, depression and sagging of the facial contour. This loss of volume, especially around the eyes and cheeks, tends to make people look tired and old. Some people are born with sunken cheeks, or prominent tear troughs, which make them look tired. Apart from cosmetic surgery, many people now choose to inject hyaluronic acid fillers to improve the facial volume loss caused by aging.

Hyaluronic acid is a high molecular weight polysaccharide. The human body itself has hyaluronic acid, which is the main component of the intercellular substance. In human skin, it exists in the dermis to help store water.volume.

The hyaluronic acid used as a filler in the market is generally produced by biotechnology. It is a non-permanent filler. The particle size and cross-link density of hyaluronic acid fillers determine its persistence. The larger the particles and the more cross-links are, the more durable and firmer the texture of the hyaluronic acid fillers will be. The firm filler is suitable for re-shaping the facial contour. If the particles are smaller and the level of cross-link is low, the texture of the filler is soft. This type of filler is suitable for superficial filling (such as wrinkles). Usually, hyaluronic acid fillers can maintain for half a year to a year. The fillers will be slowly metabolized by the human body, and finally fully absorbed.

Hyaluronic acid filler is the most commonly used filler, and is widely used to reduce wrinkles, improve facial contour and fill the sunken areas of face. The tear trough is where fillers are often injected. The tear trough is the groove that exists at the inner corner of the lower eyelid near the nose. Severe tear troughs even extend to the cheeks, making dark circles under the eyes more prominent and giving the impression of aging. Injecting fillers to the infra-orbital region will improve the tear trough and improve the facial contour. Hyaluronic acid fillers can also improve the indentation of the cheeks and temples, improving the facial contour.