1. Whether to wash your face depends on the product: if an oil based skincare product is labeled as wash free or left on the skin as a nourishing layer, then washing your face is not necessary.
2. Considering personal skin type: If the skin is oily or mixed, and the product feels greasy and uncomfortable after use, you can choose to gently wash the face with warm water to remove excess oil, but avoid using cleansing products to avoid damaging the newly formed nourishing layer.
3. Observe skin reactions: If there is any discomfort on the skin after use, such as rash, itching, etc., stop using immediately and rinse with water. If necessary, consult a dermatologist. If the product is suitable and there are no adverse reactions to the skin, you can choose whether to wash your face according to personal preference.