Why does my face sting when applying a face mask?

Stinging sensations on the face during a facial mask application may be caused by several factors: 1. **Dry skin**: Dryness caused by environmental factors or insufficient hydration may lead to flaking or cracking of the facial skin. Applying a mask at this time can rapidly replenish moisture, but the sudden exposure to a large amount of water may cause a stinging sensation. 2. **Unclean skin**: Failure to thoroughly cleanse the skin before applying a mask may leave behind residues of cleansers or shower products, which could react with ingredients in the mask and cause a stinging sensation. 3. **Impaired skin barrier**: If the skin barrier is already compromised (e.g., due to over-cleansing, use of irritating products, or dryness), active ingredients in the mask may more easily irritate the skin, resulting in a stinging sensation. 4. **Mask quality**: Some masks contain irritating ingredients such as fruit acids, or may not meet quality standards, which could cause irritation and a stinging sensation during application. 5. **Allergic reaction to the mask**: Individuals with sensitive skin may be allergic to certain ingredients in the mask, triggering an allergic reaction that causes stinging sensations on the face. In severe cases, symptoms such as itching, redness, swelling, and rashes may also occur.