It is not recommended to prepare homemade ointments to treat skin diseases, as this is risky and unscientific. Many skin diseases have their own specific diagnosis and treatment methods. Preparing ointments by yourself may delay or even aggravate the condition due to inaccurate ingredients and improper proportions, and may also cause adverse reactions such as allergies. At the same time, the random use of chemicals for preparation may lead to exposure to some toxic and harmful substances that are not permitted for medical use, which seriously threatens health. If you have a skin disease, you should seek medical attention in time, have a professional doctor make an accurate diagnosis, and prescribe safe and effective drugs for standardized treatment according to your condition.