Juvederm does not expand significantly

I have never used expansion of the product as an excuse for not injecting more product.  The hyaluronic acids are hygroscopic, meaning that they attract water, but my understanding is that the water attraction is an isovolumetric phenomenon. This means that they attract water as they breakdown, merely maintaining their original volume, not expanding. 

Certainly after one week any expansion phenomenon would have stabilized enough to proceed with further treatment to the desired effect.

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To Anonymous,

Hi.  I am sorry that you are getting contradictory answers.  Juvederm does indeed absorb water, but the useful point for the patient is that you should look good right after treatment.

I would not inject LESS than you need thinking that it is going to get bigger later. So you probably just need more Juvederm.

I always tell the patient how much Juvederm I think he or she will need, and how much it is going to cost.  Then if the patient wants less (to save money), they know in advance that they will only get a partial improvement and they are not disappointed.

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