How long does hyaluronic acid last?

The area is the most important factor. Where there is a lot of movement, hyaluronic acid is broken down faster: lips usually 6–9 months, nasolabial and marionette lines 6–12 months. Where the material sits deep on the bone and moves little, it lasts longer: cheeks, chin, jawline often 9–18 months. The tear trough is a special case – small amounts there often last 12 months and more.

The material: more strongly cross-linked, firmer hyaluronic acids last longer than soft ones. That is why different products are used for structure than for lips or fine lines. The physician chooses by area and goal.

The person: metabolism, a lot of sport, smoking, strong facial movement and the number of previous treatments all play a part. Patients often report that the second and third treatment last longer than the first – some material remains and the tissue is supported.

What 'gone' means: hyaluronic acid is not broken down abruptly but over months. Often some is still present after the stated time, but the visible effect fades. That is why a top-up usually needs less material than the first time.

Topping up too early is not sensible: layered treatments without assessment lead to over-correction. What makes sense is a check-up when the effect noticeably fades – then it is decided whether and how much.