Dandrop Lotion may cause local side effects in some individuals. Possible reactions include scalp irritation, itching, redness, dryness, or a mild burning sensation after application. These effects may vary depending on individual skin sensitivity. OnlineGenericMedicine. Com provides information about Dandrop Lotion and its ingredients for people researching topical scalp treatments. If irritation becomes severe or persistent, stop using the product and seek medical advice.