Nivea Derma Roll-On Caused Darkening and Acne After Two Months of Use

Hello, two months ago, based on a store employee's recommendation, I purchased the Nivea Derma stick roll-on. After some time, I noticed that it caused both darkening and severe acne under my arms. How can a product that is marketed as having a clean formula cause such harm to the skin? This is completely unacceptable, and I am extremely dissatisfied. I expect the company to take responsibility and look into this issue. I trusted the brand for safe skincare, but it has resulted in significant discomfort and skin damage. I hope this gets resolved soon.