Detailed answer

Expired or contaminated skincare products can lead to the formation of whiteheads. When skincare products are expired or contaminated with bacteria or other impurities, they can clog the pores and contribute to the development of whiteheads. Whiteheads occur when dead skin cells, oil, and bacteria get trapped in the pores, causing them to become blocked. Using expired or contaminated products can increase the risk of pore blockage and inflammation, leading to the formation of whiteheads. To prevent this, it's important to check the expiration dates of skincare products, ensure they are stored properly, and regularly clean and disinfect any tools or applicators used with the products.