A color-changing surprise doll is a fun and interactive toy that reveals hidden features when exposed to water or a temperature change. These dolls often come with a set of surprise accessories or outfits that change color, such as their hair, clothes, or even their skin tone, when placed in warm or cold water. Kids enjoy unboxing these dolls, which usually come with multiple layers to unwrap. This toy encourages curiosity, imaginative play, and excitement as children discover the different color-changing surprises hidden within the doll.