> 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/developers/saas-api-overview/api-for-hair-metrics-2.0/volume.md).

# Volume

Haut.AI provides an AI algorithm that estimates hair volume. Response scheme for Hair Metrics 2.0.

## **Description**

Hair volume is often associated with overall health. However, volume is determined by many factors, such as hair type, heredity, hair thickness, and hair density. The hair’s color also influences its volume: blond hair is often fine and soft, while dark hair is usually thicker. The reasons for a loss of visual volume in a hairstyle can be hair loss or hair thinning due to a lack of vitamins or diseases.

**`"algorithm_tech_name": "volume"`**

## `area_name`

The algorithm returns metrics for the following area:

* `hair`

## `main_metric`

The main metric indicates the hair volume category for `area_name`

```javascript
"main_metric": {
                "value": "Medium-low volume",
                "widget_type": "category",
                "name": "Volume",
                "tech_name": "volume",
                "widget_meta": null
            },
```

![](https://245161714-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MWxBX_zB4FnflOpyBGO%2F-MiR_5V3nq8FGSCAlM0O%2F-MiR_Rk88NOv3HBa4Rx8%2F%D0%94%D0%BE%D0%BA%204_6.jpeg?alt=media\&token=ce02ca45-4a00-4da3-8168-e7559c67e85a)

* **`value`** The hair volume is divided into eight classes, as listed below. Each category gets its own confidence level in the range of `[0,100]`, where the highest score indicates the hair's volume class:
  * `Extra-low volume`
  * `Low volume`
  * `Rather low volume`
  * `Medium-low volume`
  * `Medium-high volume`
  * `Rather high volume`
  * `High volume`
  * `Extra-high volume`
* `"widget_type": "category"`
* `"name": "Volume"`
* `"tech_name": "volume"`

***

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

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---

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