Does the underarm Botox cause breast cancer?!

There are currently no conclusive studies available that link Botox for excessive sweating of the armpits to breast cancer. When performed by a board certified doctor, Botox is a safe and effective way to manage the condition.

Botox injection has no correlation with being a cause of breast cancer. Treating the underarm is an effective way to reduce the sweat production. 

I am not aware of any studies which have shown a correlation between Botox and breast cancer, or any cancer for that matter.  I would not be concerned about getting breast cancer from a Botox treatment in the underarms for sweating.  

Botox is an FDA approved treatment for excessive underarm sweating (axillary hyperhidrosis). There is no evidence that suggests a link between Botox and breast cancer. 
I've created a video that reviews treating underarm sweating with Botox. I hope this information is helpful in your research!

Botox is not known to cause breast cancer.Topical products containing aluminum chloride may be linked to breast cancer development. The highest incidence of breast cancer is in the tail of Spence, the breast tissue that extends into the axilla. It is surmised that topical products containing alum chloride over the long term are partly responsible for this. So avoiding topicals and using something else (Botox or miraDry) MAY reduce your lifetime risk of developing breast cancer.