> 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/product-recommendation-system-1.0-deprecated/product-shelf.md).

# Product Shelf

What a Product Shelf is in the deprecated Recommendation System 1.0, and how categories and slots match products to skin concerns.

Product Shelves are a part of [Product Recommendation System 1.0 (deprecated)](/haut.ai/haut.ai-features/product-recommendation-system-1.0-deprecated.md)feature that is used to match your [Start Here](/haut.ai/readme.md#product-item) list to end-user skin concern categories for a specific set of products.

{% hint style="info" %}
Product Shelves are available in SaaS Platform via this link: <https://saas.haut.ai/app/product-inventory/shelves-list>
{% endhint %}

***

## About Product Shelf

Product Shelf is a unique matrix, that matches product items with relevant skin concerns.

Several Product Shelves can be created from the same [Product Inventory](/haut.ai/haut.ai-features/product-recommendation-system-1.0-deprecated/product-inventory.md) in order to organize product items in different recommendation setups.

> Example: You have 1 store, but you organize 2 different promo campaigns, targeted to different brands of your store. Therefore you can use 2 different product Shelves to organize product items for Brand #1 and Brand #2 separately, so they do not overlap.
>
> You can then add different Shelves to different [Consumer Apps](/haut.ai/haut.ai-features/consumer-apps.md)s.

You can have an **unlimited number** of Product Shelves in SaaS.

Each Product Shelf has:

* **Categories** to group the different skin concerns and relevant product slots for each concern. Read more here: [#about-categories](#about-categories "mention").
* Slots to tailor an exact list of product items to exact skin concerns. Read more here: [#about-slots](#about-slots "mention").

***

## About Categories

**Categories** are used to group the different types of skin concerns. There are **three categories:**

* <mark style="color:red;">**Basic Care**</mark>: this category contains **slots** for all the core skincare products for every routine, such as cleansers, moisturizers, etc.

  Learn more about it here: [Basic Care Category](/haut.ai/haut.ai-features/product-recommendation-system-1.0-deprecated/product-shelf/basic-care-category.md).
* <mark style="color:red;">**Eye Care**</mark>: this category contains **slots** for all eye-related products, such as creams, serums, etc.

  Learn more about it here: [Eye Care Category](/haut.ai/haut.ai-features/product-recommendation-system-1.0-deprecated/product-shelf/eye-care-category.md).
* <mark style="color:red;">**Special Concerns**</mark>: this category contains **slots** for products targeting specific skin concerns like visible acne, excessive redness or pigmentation. This category also offers several categories targeted for anti-ageing product items.

  Learn more about it here: [Special Concerns Category](/haut.ai/haut.ai-features/product-recommendation-system-1.0-deprecated/product-shelf/special-concerns-category.md).

<figure><img src="https://245161714-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MWxBX_zB4FnflOpyBGO%2Fuploads%2FEV2xZAE5xrb0jkMN0Xiy%2FCategories%20of%20Product%20Shelf.jpg?alt=media&amp;token=a97c260e-bbcd-47f2-a80d-7688270aa055" alt="" width="375"><figcaption><p>Skin concern categories are Tabs in Product Shelf menu</p></figcaption></figure>

***

## About Slots

**Slots** are used to tailor an exact list of product items to exact skin concerns.

* Each slot in the product recommendation category can hold **up to 12 product items.**
* Product Items from 1 slot will be ranked for display to the user based on:

  1. Priority of Product Items.
  2. Alphabetical order of Product Items Name.

  To learn more about product ranking, see [Product Inventory](/haut.ai/haut.ai-features/product-recommendation-system-1.0-deprecated/product-inventory.md#supported-product-item-properties).
* If your business does not offer some type of product for the exact **slot**, you can leave the unnecessary/irrelevant **slots** or product categories empty. The Recommendation Engine will address only the concerns with filled **slots**.

***

{% hint style="warning" %}
Not a Haut.AI client yet?
{% endhint %}

<a href="https://haut.ai/book-a-demo?utm_source=referral&#x26;utm_medium=saas_docs&#x26;utm_campaign=Docs_SaaS_HautAI" class="button primary" data-icon="user-vneck">Book a demo</a> <a href="https://haut.ai/product/ai-skin-analysis?utm_source=referral&#x26;utm_medium=saas_docs&#x26;utm_campaign=Docs_SaaS_HautAI" class="button secondary" data-icon="external-link">Platform overview on haut.ai</a>


---

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