Unsmooth face with small granular sensation may be related to closed mouth acne, allergy, keratosis pilaris and so on. 1. Closed-cell acne: If the oil secretion on the face is relatively high and the sebaceous gland ducts of the hair follicles on the face are blocked, causing closed-cell acne, the skin on the face will appear granular when touched. 2. Allergy: If the patient has recently used irritating skin care products or cosmetics, it may lead to skin allergy, skin will appear red, swollen, itchy and rash and other symptoms. 3. Keratosis Pilaris: manifested as pinpoint bumps on the skin, the bumps are skin-colored and there is no itching or pain. Due to the complexity of the cause, patients should consult a doctor in a timely manner to clarify the cause of the disease, and strictly comply with the doctor’s instructions for treatment.