How to Get Rid of Pigmentation from Botox Treatment?

Botox is a clear injectate that has no known site effect of hyper or hypopigmentation.  However, you may be experiencing bruising that can lead to hemosiderin staining.  This is rare but possible.

I am surprised that you wrote that you have permanent pigmentation problems after Botox injection. I have never heard of this before. If you do have some pigment issues, hydroquinone may help. Sometimes IPL can help in patients of light skin tones with red tones from the trauma.

I am perplexed on how Botox could cause hyperpigmentation. After all the injections are done rather deep to the skin. Bruising should resolve without leaving pigmentation.
There would obviously not be anything specific to Botox. The olod standby of hydroquinoine would be the first thing I would try. If these fails, then kojic acid or azalaic acid would be my next choices.