Retinoic acid cream and vitamin E cream can be used together. The main ingredients of retinoic acid cream include all-trans retinoic acid, which has the ability to regulate and control the differentiation and growth of epithelial cells, and can inhibit keratinization, so it is suitable for common acne and keratosis pilaris, with immune modulating and anti-inflammatory effects. According to the product insert, Vitamin A cream is not suitable for sharing with detergents such as soaps, preparations containing desquamation agents, preparations containing ethanol, and isotretinoin to avoid exacerbating skin irritation and dryness, and there may be possible interactions with other medications when used concurrently. Vitamin E creams are creams that contain vitamin E, which moisturizes the skin and prevents itching due to dryness and cracking. Vitamin E cream and vitamin A cream can be used together, in order to avoid the dilution of the drug, affecting the effectiveness of the drug, it is recommended that you can first use vitamin A cream, after a certain interval of time to use vitamin E cream.