I am sorry you are experiencing this issue, but it is not likely from Botox. Botox is injected into the muscle and wouldn't cause pigmentation issues. It is more likely a skin condition such as melasma causing your issue. See a dermatologist or plastic surgeon in your area for treatment options.
Botox and Melasma
The pigmentation is unrelated to Botox. Melasma is a common pigmentation problem that often affects the forehead. Unfortunately, it is a difficult problem to cure. Getting it under control requires strict sun protection, Retin A, hydroquinone, and chemical peels. I also recommend Heliocare, which is a fern extract that is an antioxidant and helps with protecting the skin from the sun. See link
Botox and sun
Thank you for your question LJ11111. I
am sorry to hear about your situation. Botox is a purified protein used to
address wrinkles associated with facial expression. Melasma is a condition characterized by the appearance of dark patches on the skin. Melasma can be triggered by sun exposure or other insults such as injections. It is difficult to assess your skin without photographs. Melasma can be treated with a variety of products and treatments, as can other pigmented conditions. Please consult with a doctor for specific
recommendations. Good luck!
Sun and Botox
Your pigment issues are not related to the botox. Botox is a purified protein injected into the muscle- it does not cause skin discoloration.