The sparkling material creates a glittery effect by using random noise. Here's how it works:

1. Tiling and Offset: The Tiling and Offset nodes control the tiling and offset of the noise texture, ensuring it spreads correctly across the surface.

2. Noise Movement: The noise (like gradient noise) is then added, and its scale and offset are adjusted to create random points that move over time, giving the effect of twinkling or sparkling.

3. Multiply: Finally, the Multiply node combines the noise with the chosen sparkling color (e.g., pink), giving the noise points a specific color, like glowing sparkles.