Combine soy milk, coconut oil, and olive oil in a sealable microwave-safe container.
Microwave until coconut oil is liquid, about 15 seconds. Seal container and shake vigorously until blended, about 10 seconds. Freeze until solid, about 1 hour.
Scoop out conditioner and rub between your hands to warm. Apply to hair. Cover hair with a shower cap. Leave in for 20 minutes, or up to overnight. Rinse out of hair.