Can Fengyoujing be applied to the face?
Generally, whether or not medicated oil can be applied to the face should be determined based on specific conditions such as skin condition and intended use. If discomfort occurs, it is recommended to seek medical advice promptly. The detailed analysis is as follows:

If the facial skin is healthy and intact, and there is only mild itching due to insect bites, or dizziness caused by fatigue or motion sickness, a very small amount of medicated oil may be used sparingly on the bite area or temples. Avoid sensitive areas such as around the eyes, mouth, and nose, where mucous membranes and thin skin are present. In these cases, limited use is generally acceptable and can quickly relieve discomfort.
However, medicated oil should not be used if the facial skin is sensitive, dry, or affected by acne, eczema, sunburn, or other issues. Applying medicated oil broadly or directly onto the face under such conditions is not recommended. Ingredients such as menthol and camphor in medicated oil may irritate damaged skin, leading to redness, stinging, peeling, or other adverse reactions. Application near the eyes may also cause eye irritation.
To minimize risks, it's advisable to perform a patch test on the inner wrist or behind the ear before first use. Wait 15–30 minutes to ensure no adverse reaction occurs before applying it to the face. For relief of facial symptoms, products that are gentle and specifically formulated for facial use are preferred. If any irritation develops during use, discontinue immediately, wash the area thoroughly, and consult a healthcare professional if necessary.