> 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/ita.md).

# ITA

How the ITA parameter classifies skin tone using the Individual Typology Angle, and the six categories it sorts skin colour into.

## About Parameter

The parameter analyzes skin tone using the ITA° (Individual Typology Angle) system, which quantifies how tanned the skin is based on melanin levels. Skin tone is influenced by genetics and sun exposure. The ITA° value helps classify skin color into six categories: very light, light, intermediate, tan, brown, and dark.

## Features

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

## Output

Following values for the whole face and specific facial regions (forehead, left cheek, right cheek):

1. ITA (Individual Typology Angle).
2. Skin tone classification based on ITA value.
3. L\* value.
4. a\* value.
5. b\* value.

## Output description

* **ITA:** The algorithm calculates an Individual Typology Angle value ranging from −90° to +90°
* **Classification:** One of "Very Light," "Light," "Intermediate," "Tan," "Brown," or "Dark"
* **L**\* ranges from 0 to 100
* **a**\* ranges from −128 to 127
* **b**\* ranges from −128 to 127

***

## Algorithm API

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

See [ITA Parameter Result Scheme](/haut.ai/developers/saas-api-overview/api-for-face-skin-analysis-3.0/ita.md).

***

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{% endhint %}

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