How long do they last?

Teosyal products are non-permanent hyaluronic acid-based dermal fillers, and this means that they are meant to be absorbed in time. The effect duration depends on various factors, such as the product used, the injection technique (volume, depth, area, etc.), the patient’s metabolism (ability of the body to absorb the product) and other external factors such as diet and lifestyle. 

For example, Teoxane dermal filler treatments can last up to 18 months.2  

However, the assessment of the result and of the duration of dermal filler injections remains a very subjective data.