> 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/density.md).
# Density
Haut.AI provides an AI algorithm that estimates the level of hair density.
## **Description**
The algorithm estimates how dense the hair is. Hair density is mostly determined by genetics (the number and the size of hair follicles) and the overall hair type. Usually, darker hair is more dense than lighter hair. Decreased hair density may be caused by hair loss or hair damage due to excessive styling and coloring but can also indicate the presence of medical conditions, ranging from fungus infections to autoimmune diseases. In cases of severe hair loss, it is advised to seek the help of a professional.
**`"algorithm_tech_name": "`**`density`**`"`**
## `area_name`
The algorithm returns metrics for the following area:
* `hair`
## `main_metric`
The main metric is an overall score indicating the density score for `area_name`
```javascript
"main_metric": {
"value": "High Density",
"widget_type": "category",
"name": "Density",
"tech_name": "density",
"widget_meta": null
},
```
* **`value`** The hair density is divided into three classes, as listed below:
* `"Low Density"`
* `"Average Density"`
* `"High Density"`
* `"widget_type": "category"`
* `"name": "Density"`
* `"tech_name": "density"`
***
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{% endhint %}
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