To define curls in kinky hair without using heat, follow these steps for a healthy, natural look:

1. Wash and Condition: To begin, wash your hair with a sulfate-free shampoo and hydrate your curls with a hydrating conditioner. This will help improve the curl definition.
2. Use a Leave-In Conditioner: Use a leave-in conditioner on wet hair after washing. This adds moisture and helps to soften the curls, making them more manageable.
3. Finger-Coil or Twist: To define your curls, apply a curl cream or styling gel, then use your fingers to coil small sections of hair. Alternatively, try two-strand twists for a defined, elongated curl pattern. Let your hair air-dry, or use a diffuser for volume.
4. Avoid Frizz: For added curl definition, avoid touching your hair while it’s drying. This will keep your curls in their natural structure and help avoid frizz.
5. Use a Curl Cream or Gel: Choose a product specifically designed for kinky hair since using it without heat will help to accentuate your natural curl pattern. Ensure the product offers hold without weighing down your hair.
6. Apply a Curl-Enhancing Mousse: If you're looking for more volume and definition, a lightweight mousse can help lift and define curls while maintaining their natural shape.

You can get gorgeously defined curls in kinky hair without using heat styling by following these techniques.