# Noise Reduction

<figure><img src="/files/Zsb94E7jKAum5G6W9Axj" alt=""><figcaption></figcaption></figure>

The **Noise Reduction** tool in Aperty helps reduce unwanted grain or noise in your portrait, especially in images taken at high ISO or low-light conditions. This tool ensures that details remain smooth while minimizing distracting noise without sacrificing image quality.

* **Luminosity**: Reduces noise in the brightness (luminance) channel of the image, which often appears as grain or roughness in the image, especially in areas of solid color like skin. Increasing this value smooths out the noise in the lighter and darker areas, resulting in a cleaner, more polished portrait. Be cautious not to overuse it, as too much luminosity reduction can make the image look overly soft and lose fine details.
* **Color**: Reduces noise in the color channels, which appears as random color speckles or blotches across the image, often visible in skin tones or smooth areas. Increasing this slider smooths out these color artifacts, keeping the overall color tones more even and natural without affecting the sharpness of the portrait.
* **Boost**: Amplifies the effect of both the luminosity and color noise reduction sliders. When Boost is increased, it intensifies the smoothing process, further reducing noise but with a greater risk of losing fine details. This is useful when working with very noisy images but should be applied carefully to avoid overly softening key areas like the eyes or hair.

{% hint style="info" %}
Start by adjusting **Luminance** and **Color** noise reduction to remove grain and color speckles for portrait editing. Use **Boost** sparingly to preserve facial details and avoid making the portrait look too smooth or artificial. Focus on reducing noise in the background while keeping key features, like the eyes and lips, sharp.
{% endhint %}


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