BACKGROUND The blue hue of skin overlying injected hyaluronic acid (HA) fillers in certain cases has been hypothesized in the literature as related to the Tyndall effect. This investigation aims to understand the relevant optical concepts and to discuss the plausibility of this assertion. METHODS Theoretic and physical aspects of relevant optical theories including the Tyndall effect, the Ral...

BACKGROUND Injectable hyaluronic acid fillers (HAFs) and laser/light procedures have become increasingly popular for noninvasive facial rejuvenation in many cosmetic practices. However, the effect of laser/light treatments on HAFs is unknown. OBJECTIVE Our objective was to examine the effect of laser/light treatments on HAFs in a porcine model. METHODS The abdomens of 6 Yorkshire pigs were ...

Hyaluronic acid-based fillers are the most used dermal today. Due to its safety, several types of products on market with different rheological properties. Recently a new Korean filler high hyaluronic acid concentration was launched in Brazil. The properties this caught our attention and encouraged use for global facial rejuvenation. We report clinical experience these highly concentrated cohes...