Detailed answer

Skin brighteners can cause side effects such as redness, irritation, and dryness. Some ingredients commonly found in brighteners, like hydroquinone and retinol, can be harsh on the skin and may cause inflammation or sensitivity. It is also important to note that excessive use or misuse of skin brighteners can lead to more serious side effects, such as skin discoloration or damage. It is recommended to consult with a skincare professional before using any brightening products to ensure they are suitable for your skin type and to minimize the risk of side effects.