What should I do for itchy skin due to allergies?

When acne appears on the face due to staying up late, the following measures can help improve the condition: 1. Maintain a regular sleep schedule: Ensure you fall asleep before 11 p.m. to restore liver detoxification function, reduce the accumulation of toxins and waste in the body, and promote acne resolution. 2. Cleanse the skin: After staying up late, wash your face with lukewarm water and a gentle facial cleanser to remove excess oil and impurities from pores, helping prevent acne formation. 3. Adjust your diet: Reduce intake of high-sugar and high-fat foods, and increase consumption of vitamin-rich fruits and vegetables to enhance metabolism and support acne improvement. 4. Stay hydrated: Drink plenty of water to boost metabolism and facilitate detoxification, which aids in reducing acne. 5. Medical treatment: If acne is severe, use medications such as adapalene gel or isotretinoin gel under the guidance of a doctor.