When you have a stuffy nose and want a hot shower, an aromatic shower steamer can make the experience feel especially refreshing. These eucalyptus and spearmint shower steamers contain menthol crystals and a fresh, cooling fragrance that creates a spa-like shower experience when you’re feeling congested.
Unlike bath bombs, shower steamers are designed to dissolve on the shower floor and release their aroma into the warm, humid air. You don’t use them in bathwater or apply them directly to your skin.
This recipe combines baking soda, citric acid, kaolin clay, menthol crystals, and eucalyptus and spearmint fragrance oil. The menthol creates a cooling sensation, while the fragrance adds a fresh, minty aroma.
A quick note about congestion: Menthol can make breathing feel cooler and more open, but that sensation doesn’t necessarily mean nasal congestion has improved. These shower steamers are an aromatic shower product, not a treatment for a cold or respiratory illness.
Prefer to Watch Tutorial on Making Eucalyptus and Spearmint Shower Steamers?
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What Each Ingredient Does
Baking Soda
Baking soda forms the bulk of the recipe. It is the alkaline base. It helps create the solid structure of the shower steamer and reacts with citric acid when exposed to water, helping the steamer break apart as it dissolves.
Citric Acid
Citric acid – which is the acid reacts with baking soda when water activates the mixture. This reaction helps the shower steamer fizz and break down during use.
Too much moisture during preparation can start this reaction before the steamer reaches the shower, which is why the binding liquid must be added sparingly.
Kaolin Clay
Kaolin clay helps absorb a small amount of moisture and contributes to the texture of the mixture. It can also help the finished steamers hold their shape.
Menthol Crystals
Menthol provides the characteristic cooling sensation associated with minty products. In a shower steamer, it contributes to the fresh, cooling aromatic experience.
Eucalyptus & Spearmint Fragrance Oil
The fragrance oil gives these shower steamers their fresh, minty scent.
Isopropyl Alcohol
A small amount of isopropyl alcohol helps the dry ingredients bind together so they can be pressed into molds. You want to use 91% rubbing alcohol.
It should be added gradually with a fine-mist sprayer. Too much liquid can activate the baking soda and citric acid prematurely, causing the mixture to fizz or expand before it is used.
Eucalyptus & Spearmint Shower Steamer Recipe
| Ingredient | Percentage | Weight |
|---|---|---|
| Baking soda | 69% | 138 g |
| Citric acid | 22% | 44 g |
| Kaolin clay | 5% | 10 g |
| Menthol crystals | 1% | 2 g |
| Eucalyptus & spearmint fragrance oil | 3% | 6 g |
| Total | 100% | 200 g |
Equipment
- Digital scale
- Mixing bowls
- Spoon or spatula
- Fine-mist spray bottle for isopropyl alcohol
- Shower steamer molds or silicone molds
- Gloves
- Airtight storage container
- Mica powder
Work in a well-ventilated area. Avoid breathing airborne powders, and keep the fragrance and menthol mixture away from your eyes.
How to Make Eucalyptus & Spearmint Shower Steamers
Step 1: Dissolve the Menthol Crystals
Weigh the fragrance oil into a small container. Add the menthol crystals and stir.
Allow the mixture to sit while you prepare the dry ingredients, stirring occasionally. Check that the crystals have dissolved before continuing. They typically take about 15 minutes to dissolve.
Note, they are not water soluble so they need to be dissolved in the fragrance oil or in rubbing alcohol.
Step 2: Mix the Dry Ingredients
Weigh the baking soda, citric acid, and kaolin clay into a mixing bowl.
Stir thoroughly, breaking up any lumps so the ingredients are evenly distributed. A uniform dry mixture helps prevent pockets of citric acid or clay in the finished steamers.
Step 3: Add the Fragrance Mixture
Add menthol and fragrance oil mixture into the dry ingredients and mix.
Mix until the fragrance is distributed evenly throughout the powders. Scrape the sides and bottom of the bowl to incorporate any material that collects there.
The mixture should still be crumbly at this stage. The fragrance oil alone may not provide enough binding to hold the steamers together.
Step 4: Add Mica Powder
Add mica powder to the shower steamer crumble and mix well.
Step 5: Add Isopropyl Alcohol
Using a fine-mist spray bottle, lightly mist the mixture with 91% or higher isopropyl alcohol.
Start with one or two sprays, mix thoroughly, and check the texture before adding more. Repeat as needed.
The ideal consistency resembles damp sand. When squeezed firmly in your hand, the mixture should hold its shape. When poked, it should crumble rather than feel wet or pasty.
Don’t pour the alcohol directly into the bowl. Adding too much at once can activate the baking soda and citric acid, leading to premature fizzing and a weaker finished product.
Step 6: Pack the Molds
Fill your molds with the mixture and press it down firmly. Really pack it into the mold.
Compact packing helps the shower steamers hold together after unmolding. If the mixture crumbles as you press it, add a very small amount of additional alcohol mist, mix again, and retest.
Step 7: Dry the Shower Steamers
Leave the molded steamers to dry for 24–48 hours, or longer if needed.
Drying time depends on the size of the molds, humidity, and how much alcohol was used. The steamers should be firm and completely dry before you remove them from the molds or package them.
If they are still soft or damp, give them more time. Packaging them before they are dry can trap moisture and cause premature fizzing.
Step 8: Store the Finished Steamers
Once fully dry, store the shower steamers in an airtight, moisture-resistant container in a cool, dry place.
Keep them away from humidity, sinks, and shower spray until you’re ready to use them. Moisture can activate the baking soda and citric acid, reducing their performance.
How to Use Shower Steamers for a Refreshing Shower
- Place one shower steamer on the shower floor or on a ledge where it will receive some splashes but won’t sit directly under a strong stream of water.
- Turn on the shower and allow the warm water and humidity to help release the aroma.
- Adjust the steamer’s position if it dissolves too quickly or too slowly.
- Allow it to dissolve naturally, then rinse away any remaining residue.
Direct water exposure makes a shower steamer dissolve faster. Placing it just outside the main stream usually gives you more control over how quickly it breaks down.
These steamers are for shower use only. Don’t add them to bathwater, rub them onto your skin, or place them where someone could slip on the dissolving mixture.
Tips for Making Firm Shower Steamers
Add the Alcohol Slowly
The most common problem is adding too much liquid. The mixture should hold together when squeezed but should not look wet or begin fizzing in the bowl.
Pack the Molds Firmly
Loose packing can result in fragile steamers that crumble during unmolding. Press the mixture firmly into every part of the mold.
Allow Enough Drying Time
Don’t rush the drying process. Larger steamers and humid conditions may require more than 48 hours.
Keep Moisture Away
Humidity can cause the ingredients to react before the steamer reaches the shower. Make sure your equipment and molds are dry, and store the finished product in an airtight container.
Check the Menthol Crystals
Menthol crystals need to be incorporated evenly. They will not melt when introduced into water. They have to be dissolved in the fragrance oil.
Humidity
Making shower steamers in very humid conditions can be challenging.
I ran into this problem myself last summer when my batches kept fizzing up, even though I was careful with the amount of isopropyl alcohol I added. The humidity was the culprit!
Moisture in the air can trigger the reaction between baking soda and citric acid before the steamers are even molded. For best results, make these on a dry day or in a room with low humidity.
Troubleshooting Shower Steamers
Why Are My Shower Steamers Crumbling?
The mixture may not have enough binding liquid, or the molds may not have been packed firmly enough.
Mist the mixture with a little more isopropyl alcohol, mix thoroughly, and test it again before pressing it into the molds.
Why Did My Shower Steamers Start Fizzing in the Mold?
The mixture may have been exposed to too much moisture. Water or excessive liquid can start the reaction between baking soda and citric acid.
Use a fine-mist spray bottle, add the alcohol gradually, and mix between applications.
Why Are My Shower Steamers Soft After Drying?
They may need more time to dry, especially in humid conditions. Leave them in a dry, well-ventilated location until they are firm and completely dry.
If they remain soft, review how much alcohol was added and whether the ingredients were weighed accurately.
Why Don’t My Shower Steamers Smell Very Strong?
The aroma depends on the fragrance oil, the suitability of that fragrance for this application, and how the steamer is positioned in the shower.
Make sure the fragrance oil is compatible with the recipe and used according to its supplier’s recommendations. Placing the steamer directly under running water can make it dissolve faster without necessarily providing a longer-lasting aromatic experience.
Frequently Asked Questions
Do Eucalyptus and Menthol Shower Steamers Help With Congestion?
They can provide a refreshing aromatic shower experience when you’re feeling stuffy. Menthol creates a cooling sensation that may make breathing feel easier, but this sensation doesn’t necessarily mean that nasal congestion has been relieved.
These shower steamers are not a substitute for medical treatment.
Can I Use Essential Oils Instead of Fragrance Oil?
Not as an automatic one-to-one substitution. Essential oils and fragrance oils have different compositions and properties, so changing the aromatic ingredient may affect solubility, scent, and safety.
If you want to formulate a version with essential oils, evaluate the new formula separately and follow appropriate safety guidance for the specific oils.
Can I Use These Shower Steamers in the Bath?
No. This recipe is designed for shower use, not for soaking in bathwater. Menthol and concentrated aromatic ingredients can irritate skin and sensitive areas, and the formula has not been designed or tested as a bath product.
How Long Do Homemade Shower Steamers Last?
Typically they should last for 6-12 months. Keep them in an airtight container and check for signs of moisture damage or changes in appearance and scent.
Because this is a homemade dry product, don’t assign a guaranteed shelf life without testing it under your intended storage conditions.
Final Thoughts
These eucalyptus and spearmint shower steamers are a straightforward project for anyone who enjoys a fresh, minty aroma in the shower, especially when feeling stuffy.
The key to making them successfully is to dissolve and distribute the menthol properly, add the isopropyl alcohol gradually, pack the molds firmly, and allow the finished steamers to dry completely.
Keep them dry until use, position them away from the strongest stream of water, and remember that their purpose is to create a refreshing aromatic shower experience rather than to treat congestion.
Printable Recipe Eucalyptus & Spearmint Shower Steamers for Congestion
Equipment
- Scale
Ingredients
- 138 grams Baking soda
- 44 grams Citric acid
- 10 grams Kaolin clay
- 2 grams Menthol crystals
- 6 grams Eucalyptus & Spearmint Fragrance Oil
Instructions
- Weigh the fragrance oil into a small container. Add the menthol crystals and stir. Leave to dissolve completely, typically 15-20 minutes.
- Weigh the baking soda, citric acid, and kaolin clay into a mixing bowl. Mix well.
- Add the menthol and fragrance oil mixture into the dry ingredients and mix.
- Add mica powder to the shower steamer crumble and mix well.
- Spray with rubbing alcohol. Start with one or two sprays, mix thoroughly, and check the texture before adding more. Repeat as needed.The ideal consistency resembles damp sand. When squeezed firmly in your hand, the mixture should hold its shape.
- Fill your molds with the mixture and press it down firmly. Really pack it into the mold.
- Allow to fully set up for 24 hours.
- Unmold and enjoy!