Can Collagen Injections on the Nose Be Removed?

The only dermal fillers which can easily be removed are HA products such as Restylane and Juvederm.  There is a specific enzyme that can be injected to melt away the product.  Products such as Radiesse, Evolence, Sculptra and many others are easily removable.  However, these products are very effective when used in the appropriate patient.

There are two ways. Firstly Hyaluronidase can be injected to break down a filler like Restylane. Secondly a steroid injection can help speed up the process of absorption. But the safest approach and the one I would recommend is to simply wait. In 3 to 6 months it will have all reabsorbed.

Collagen injections to the nose cannot be removed. If hyaluronic acid products such as Restylane are used, then off-label use of hyaluronidase can be utilized to reverse the result. See attached video for sample results and outcomes of non-surgical rhinoplasty

Short of injections with steroids (which I wouldn't recommend) collagen cannot be removed. But then again, it doesn't have to be since it will dissolve over the coming months.
The only injectable fillers that can be easily "removed" are the hyaluronic acid gels (e.g., Restylane, Perlane, Juvéderm, Hylaform) by the injection of hyaluronidase--an enzyme that digests hyaluronic acid.

Collagen injected in the nose will eventually resorb overtime.  Most of these products will last 4-6 months.