> For the complete documentation index, see [llms.txt](https://docs.saas.haut.ai/haut.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.saas.haut.ai/haut.ai/haut.ai-features/algorithms/face-skin-analysis-3-0/uniformness.md).

# Uniformness

What the Uniformness parameter measures about how evenly skin colour is distributed, and how to read its scores, grades, and mask.

## About Parameter

The parameter measures how evenly skin color is distributed across the face. An uneven appearance can result from various factors, including patches of darker or lighter pigmentation, redness from inflammation, visible small blood vessels, and surface texture differences. When skin color is more uniform, the overall appearance looks smoother and more balanced.

## Features

1. Multi-area analysis: forehead, right cheek, left cheek.
2. Works with 1 and 3 side facial images.

## Output

1. Score from 1 to 100.
2. Grade from 1 to 5.
3. Algorithm-assigned skin condition tag (Great, Good, Average, Poor).
4. Score for specific facial regions: forehead, left cheek, right cheek.
5. Vector mask.

## Scores & Grades Description

<table><thead><tr><th width="119.73828125">Score value</th><th width="120.359375">Grade value</th><th width="360.046875">Description</th><th>Tags</th></tr></thead><tbody><tr><td>100-90</td><td>1</td><td>Flawlessly smooth texture with invisible pores and completely consistent pigmentation.</td><td>Great</td></tr><tr><td>89-80</td><td>2</td><td>Only very faint grain or slight color variation visible upon close inspection.</td><td>Good</td></tr><tr><td>50-79</td><td>3</td><td>Noticeable pores, mild roughness, or uneven pigmentation are clearly visible.</td><td>Average</td></tr><tr><td>30-49</td><td>4</td><td>Significant irregularities.</td><td>Poor</td></tr><tr><td>&#x3C;30</td><td>5</td><td>Extreme roughness, severe discoloration create a highly uneven, textured landscape.</td><td>Poor</td></tr></tbody></table>

## Mask Color Legend

The uniformness mask shades color unevenness across the face. With the default color scale, lighter areas mark an even skin tone, and deeper indigo marks a more uneven skin tone.

<figure><img src="https://245161714-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MWxBX_zB4FnflOpyBGO%2Fuploads%2Fgit-blob-259ef453c12a90edb54777247093fcfcef9cac20%2Funiformness-mask-legend.svg?alt=media" alt="Uniformness mask color scale, from light blue (even skin tone) on the left to deep indigo (uneven skin tone) on the right"><figcaption><p>Default color scale for the uniformness mask.</p></figcaption></figure>

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## Algorithm API

{% hint style="warning" %}
API access is available only for <mark style="color:purple;">**Professional**</mark> plan clients
{% endhint %}

See [Uniformness Parameter Result Scheme](/haut.ai/developers/saas-api-overview/api-for-face-skin-analysis-3.0/uniformness-parameter-result-scheme.md).

***

{% hint style="warning" %}
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{% endhint %}

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