Nivea Black & White Deodorant Darkened My Underarms

I used the Nivea Black & White deodorant, and it visibly darkened my underarms. No matter what I try, I can’t reverse the damage. It's incredibly frustrating to spend money on a product from a trusted brand only to have it harm my skin like this. You're playing with people's health by releasing products that cause such issues. This is unacceptable! I bought it believing in the brand, but I’m left with damaged skin. Nivea needs to take responsibility for the harm this product has caused and provide a solution to address this serious problem.