How Much Swelling Should I Expect After Collagen Injection?

Collagen injections are rarely if ever done any more. For localized indents, hyaluronic acids such as Juverderm or Restylane might give you a good result, or even fat injections if the indents are not too small. These would not be permanent solutions but temporary fixes. Sometimes the filler...

It really depends on which collagen you get. Currently there are three commercially available forms: Bovine (cow) Porcine ( pig) Cadaveric (human) Reactions differ most notably in the ability to cause an allergic reaction with decreasing severity in the order listed above. Bovine typically...

Your friend can't be certain of the actual filler that was used. Whether collagen, or any other filler, substantial volume would be needed to create a visible improvement in an area that large. Once such sufficient volume of filler is inserted, there is a concern of migration, nodule...

Some clinicians will use Collagen injections to treat undereye circles.  I would recommend a topical regimen, followed by a MelaPeel as an adjunct to hyaluronic acid fillers. 

In fact, I can think of very few, if any, proper medical indications for injection of collagen into breasts. Just where exactly did your friend have the collagen placed? In the nipple? Or was it supposedly for enlargement? Are you sure it was collagen injection and not fat? Even fat...

Swelling, bruising, redness. Collagen, hyaluronic acids such as Juvederm and Restylane, and Radiesse are used off-label to raise depressions in the nasal bridge over the bony hump to make a more straight profile or slope. They last for several months.