The ingredients in ranch dressing can vary depending on the brand and recipe, but some common ingredients include:

• Buttermilk or sour cream
• Mayonnaise
• Garlic
• Onion powder
• Dill
• Parsley
• Chives
• Salt
• Black pepper

Additional ingredients may include vinegar, lemon juice, sugar, and various seasonings. Some ranch dressings may also contain additives or preservatives, so it's always a good idea to check the label if you have any dietary restrictions or concerns.