Final answer:
The nail art upgrade where one color fades into another and the meeting point is a combination of the two colors is called color fading.
Step-by-step explanation:
The nail art upgrade where one color fades into another and the meeting point is a combination of the two colors is called color fading. It is a technique often used in nail art to create a gradient effect. The colors blend together seamlessly, creating a smooth transition between the two shades.
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