If you have sensitive or reactive skin, caution is always advised with any new cosmetic product. The key ingredient, hyaluronic acid, is generally well-tolerated as it is a substance naturally found in the skin, known for its hydrating properties. However, the complete formula includes other components that could potentially cause a reaction. Before using the mask on your entire face, it is a good general practice to perform a patch test. Apply a small amount of the serum from the sheet mask packet (or a dab of the cream) behind your ear or on the inside of your forearm. Leave it for 24 hours and watch for any signs of redness, itching, burning, or swelling.
When using the full product, avoid the delicate eye area entirely. Pay close attention to how your skin feels during and after use. If you experience any stinging, tightness beyond the normal temporary sensation, or visible irritation, stop use immediately, rinse the area with water, and discontinue the product. If you are currently using several active skincare products (like retinoids, strong exfoliants, or acne treatments), introducing this intensive hydrating mask could potentially overload your skin barrier. Consider using it on a day when you are not using other actives, and always introduce new products thoughtfully, one at a time.