# Reusable Formulas

Reusable production formulas are useful for situations where you have several products that share common ingredients, but have one or more ingredients that differ, from product to product. They remove the repetitiveness of entering the same formula multiple times, once per product, and ensure that you ingredients are consistent between similar products.

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### Fixed vs. Placeholder Materials

* **Fixed:** These are materials that are shared by all products using the formula
* **Placeholder:** These materials will differ by product. You'll be prompted to select which material to use for each of these

### A Simple Example

Let's say you sell 12 oz candles in 3 different scents, Juniper, Citrus, and Sage, and 2 jar colors, Clear and Amber. That means you'd have 6 total variants. And in each of these variants, you'd use the same quantity of wax, same wick, sticker, and same quantity of fragrance oil.

#### Variant Grid

| Name                         | Fragrance (1st Placeholder) | Jar (2nd Placeholder) |
| ---------------------------- | --------------------------- | --------------------- |
| 12oz Candle - Juniper, Clear | Juniper Fragrance Oil       | Clear 12oz Jar        |
| 12oz Candle - Citrus, Clear  | Citrus Fragrance Oil        | Clear 12oz Jar        |
| 12oz Candle - Sage, Clear    | Sage Fragrance Oil          | Clear 12oz Jar        |
| 12oz Candle - Juniper, Amber | Juniper Fragrance Oil       | Amber 12oz Jar        |
| 12oz Candle - Citrus, Amber  | Citrus Fragrance Oil        | Amber 12oz Jar        |
| 12oz Candle - Sage, Amber    | Sage Fragrance Oil          | Amber 12oz Jar        |

#### How to Setup Your Formula

1. Click **"+ Add Product"** (or edit an existing product)
2. Scroll down to the **"Production"** section
3. Click on the **"Formula"** dropdown under Production - this will show a list of formulas, which is probably empty
4. Click **"+ Add Formula"**
5. Name your formula - i.e. "12oz Candle"
6. Set your batch size, or leave it as 1 piece - this works the same was as the Batch Size in normal production, so your material quantities will be divided by this batch size. If you enter a batch size of 12, then you'll enter the materials needed to make 12 candles
7. Add your Fixed Materials
   1. **Coconut Wax** - 10oz
   2. **ECO4 Wick** - 1 piece
   3. **Wick Sticker** - 1 piece
   4. **12oz Jar Lid** - 1 piece
   5. **12oz Candle box** - 1 piece
8. Add your Placeholder Materials
   1. **Fragrance Oil** - 1oz
   2. **Jar** - 1 piece
9. Save your Formula
10. Click **"Select"** to use your new formula in your product
11. Now, select your **Fragrance Oil** & **Jar**


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