Will it jeopardize my breast fat transfer if I get a collagen injection?

I would not recommend placing the collagen into the area of fat. I am not sure why you even want collagen injections to your breast or any other part of your body since Hyaluronic acid, like Juvederm, is much safer and less reactive.

In the United States collagen injections fell out a favor rapidly when new better alternatives became available in particular Restylane which was the first HA hyaluronic acid based filler. Before HA fillers were available collagen had a short lifespan and had undesirable side effects like leaving bumps and requiring allergy testing.

Regardless, most cosmetic fillers are prohibitively expensive to use for body contouring purposes and are primarily aimed for facial aesthetics where one and 2 mL syringes are sufficient to have a substantial impact.

You didn’t include any context in regards to timing to the various procedures.

I suggest you ask each of the providers how they feel about this.

Collagen injections for breast augmentation is some thing that doesn’t happen in the United States at least not commonly.

Perhaps you live in a different country with different products, different rules and different medical standards.

Best,

Mats Hagstrom MD