I read that breast cancer survivors should not use hyaluronic acid because it promotes cancer cell growth. Am I in danger?

As of current, there is no link between the use of hyaluronic acid and cancer cell growth. As always, see an expert for any injectables. Best, Dr. Emer. 

Thank you for your question. As far as I'm aware, this is not scientifically supported and may be a myth. I would suggest consulting your physician to see if they have any concerns. 

The human body makes its own hyaluronic acid. There is no scientific data supporting your statement about breast cancer survivors avoiding hyaluronic acid. There is data that suggests that metastatic breast cancer increases serum hyaluron levels and that this may be useful as a biomarker of cancer activity. But this is only investigational.   It has nothing to do with the cosmetic used of manmade hyaluronic acid fillers. Cleo is an external labial lubricant that uses hyaluronic acid among its ingredients. It does not cause cancer. Worry not.

There is no contraindication or plausible concern related to the use of hyaluronic acid-based fillers (e.g. Juvederm, Restylane) for anyone with any history of any type of cancer. Hyaluronic acid is a normal component of your skin, it is biocompatible with no cancer cell promotion.