Rosemary and mint are beneficial for the hair and are perfect to use in a shampoo bar recipe. Learn how to make these homemade rosemary mint shampoo bars – they smell amazing, and are a wonderful herbal beauty care product!
Homemade Shampoo Bars
I love making my own homemade herbal bath and beauty products, and this shampoo bar recipe is no exception!
Making homemade soap was the one thing that I didn’t do for a long time, admittedly because I was a little scared of the whole process. But when I finally did it, I realized it wasn’t really that bad.
Since I’ve started to make soap, I’ve also become interested in making shampoo bars. The process is the same as soap, but with different ingredients that are good for healthy hair.
I’m sure you will love these homemade rosemary mint shampoo bars!
How to Make Rosemary Mint Shampoo Bars
This recipe for rosemary mint shampoo bars comes from Jan Berry’s (of the Nerdy Farm Wife blog) Handmade Natural Soaps eBook Collection and she has been so kind to let me to share it with you!
She also offers a bundle that includes the ebook collection and a soapmaking course. I highly recommend these resources, especially if you are new to making soap or shampoo bars!
Shampoo Bar Ingredients
My favorite place for buying carrier oils, essential oils, and dried herbs for soap making is Mountain Rose Herbs.
I get the lye from Essential Depot. Lye is necessary for making these shampoo bars, but it’s not something to worry about too much. All soap is made with lye, or else it wouldn’t be soap! While you do need to be careful while handling it, there is no lye left in the final soap product due to the saponification process.
For a more detailed list of equipment, or if you are new to making soap, please see my post on how to make soap for beginners, or get Jan’s Natural Soapmaking eBook package.
It goes into much more detail on the whole process and makes it all really clear for people who are just starting out.
Before you Start: Make the Rosemary Infused Oil
The first step to making this shampoo bar recipe is to make rosemary infused oil.
Infuse about one cup of olive oil with ¼ cup of dried rosemary in a cool and dark place for at least 2 weeks (or use the quick heat method on the stovetop if you prefer).
After the oil has infused and when you are ready to make the shampoo bars, strain out the rosemary through a fine mesh sieve.
Make the Peppermint Tea
When you are ready to make the shampoo bars, make peppermint tea.
To make the tea, steep one tablespoon of dried peppermint in one cup of boiling water for 15-20 minutes. Let it cool to room temperature and strain before using.
Make the Shampoo Bars
Wearing gloves, goggles, and long sleeves, weigh the cooled peppermint tea into a heatproof pitcher.
Weigh the lye next, then carefully sprinkle and stir it into the tea. Set the solution aside in a safe place to cool.
Let the lye solution cool for 30 to 40 minutes so the temperature drops to around 100 to 110°F (38 to 43°C).
Measure out the oils by weight. Weigh and melt the coconut oil, then combine it with the other oils. This should bring the temperature of the oils up to somewhere around 90 to 100°F (32 to 38° C).
If needed the oils can be warmed slightly to bring the temperature up to 90 to 100°F (32 to 38° C).
Carefully pour the lye solution into the oils.
Using a combination of hand stirring and a stick (or immersion) blender, mix until trace is reached.
Add the essential oils then pour the soap mixture directly into a mold, cover, and insulate with a towel or blanket.
Use a spatula to make a design on the top of the soap if desired.
Let the soap stay in the mold for 1 to 2 days, then remove it from the mold and slice it into bars.
Cure the shampoo bars in the open air for 4 to 6 weeks before use.
How to Use Shampoo Bars
The main difference between soap and shampoo bars is that shampoo bars are made with oils that are known for hair care, such as jojoba or argan oil.
There are also herbs, such as rosemary and mint that are used here, that are great for hair.
There are many more herbs for the hair and scalp that you can read about in the Handmade Natural Soaps eBook Collection.
To use the shampoo bars, simply rub the bar on your hair and lather up like you normally would.
Jan also talks about the importance of using a vinegar rinse with shampoo bars and has a few great ideas and recipes for those as well. You could also just use apple cider vinegar.
I think you will love these rosemary mint shampoo bars!
To begin with, they smell absolutely amazing. They are pepperminty in a good way, and also herbaceous and piney from the rosemary.
These shampoo bars are great for the hair of course, but you can use them just as regular soap as well.
I think I’m fully addicted to soap making now. I’ll never buy soap (or shampoo) again!
More Natural Soap Recipes
Once you start making homemade soap, you’ll never be able to go back to store bought bar soap again. Have some fun and try these other soap recipes too!
- Wild Rose & Yarrow Soap
- Kombucha Soap
- Beginners Calendula Soap
- Dandelion Soap
- Winter Spice Pine Soap
- Rose Hip Soap
Rosemary Mint Shampoo Bars
- 10 oz olive oil infused with rosemary
- 8 oz coconut oil
- 4 oz sunflower oil
- 4 oz castor oil
- 2 oz jojoba oil
Liquids and Lye
- 3.82 oz lye
- 9 oz peppermint tea cooled to room temperature
- 1 tbsp peppermint essential oil
- 1 tsp rosemary essential oil
- Wearing gloves, goggles & long sleeves, weigh the cooled peppermint tea into a heat-proof pitcher. Weigh the lye next, then carefully sprinkle and stir it into the water. Set the solution aside in a safe place to cool.
- Let the lye solution cool for 30 to 40 minutes so that the temperature drops to around 100 to 110°F (38 to 43°C).
- Measure out the oils by weight. Weigh and melt the coconut oil, then combine it with the other oils. This should bring the temperature of the oils up to somewhere around 90 to 100°F (32 to 38° C). If needed the oils can be warmed slightly to bring the temperature up to 90 to 100°F (32 to 38° C).
- Pour the lye solution into the oils. Using a combination of hand stirring and a stick (or immersion) blender, mix until trace is reached.
- Add the essential oils then pour the soap mixture directly into a mold, cover and insulate with a towel or blanket.
- Let the soap stay in the mold for 1 to 2 days, then remove from the mold and slice into bars. Cure in the open air for 4 to 6 weeks before use.
- To make the rosemary infused oil, infuse about one cup of olive oil with ¼ cup dried rosemary in a cool and dark place for at least 2 weeks (or use the quick heat method on the stovetop if you prefer). After the oil has infused and when you are ready to make the shampoo bars, strain out the rosemary through a fine mesh sieve.
- When you are ready to make the shampoo bars, make the peppermint tea. To make the tea, steep one tablespoon of dried peppermint in one cup boiling water for 15-20 minutes. Let it cool to room temperature and strain before using.
I love these shampoo bars. Is it safe to use the bars with rosemary EO in them when pregnant? If I wanted to make a new batch while pregnant could I just have my husband mix in the EOs and pour it into the mold?
Grow Forage Cook Ferment says
Hi Kris, rosemary essential oil is on the list to avoid while pregnant. While I think it would probably be fine to use on your hair, it’s always best to err on the safe side. I would use different essential oils that are known to be safe during pregnancy, like lavender or sweet orange.
Hi! I love the recipe! I tried it and my soap was pretty green and yours is white. Did I do something wrong? I used lemongrass, but it was already green after I got it to trace. Thank you!
Grow Forage Cook Ferment says
Hi Matt, if the olive oil you used was green in color that could be the reason! Otherwise I’m not sure.
Jill H says
Loved making this recipe and it smells beautiful, but…
*It took ages to harden and is still not completely hard. Should I wait longer until using it? Or would rebatching it help?
*When I’ve used it, my hair feels heavy and greasier than before I washed it. Is this part of the process of changing to shampoo bars? Is it to do with living in hard water area? Is it because I did not have a rinse to balance/remove the grime from my hair?
Any thoughts about what to do would be very much appreciated as I don’t like waste!
Jiji El says
It’s a recipe for a soap and the soap is a heavy one at that. You should probably just let it dry for a few weeks and not use it as a shampoo.
I have never made or used this bar, but had a similar experience with a commercially available shampoo bar and quit using it because it made my hair feel so greasy and gross. I ran across a suggestion online several years ago (I don’t even remember where!) that said if you have hard water, wetting your hair with baking soda water prior to using a shampoo bar can be helpful. It made all the difference for me and I have been happily using bar shampoo since.
I have tried various dilutions, but eventually settled on about one teaspoon of baking soda in 20-ish ounces of water (in a cleaned, repurposed dish soap bottle). I squirt some over my hair before shampooing and each bottle full usually lasts me a few washings. You may need more or less baking soda depending on your hair type — my almost-curly hair likes to dry out if I use too much. I do use a cider vinegar rinse after shampooing (in addition to conditioner) but I haven’t always, so I think the vinegar was less of a required success factor for me.
Hope there’s some help in this for someone!
Hi, I have made these shampoo bars and love them. Is there anyway to turn my bar into a liquid? Is it as easy as grating the bar and covering with water until melted? Would I need some type of preservative?
Or is there a way, either CP or HP, making these and turning it into liquid then instead of putting into molds?
Thanks for any help or suggestions.
Canal Fulton Bath House says
Liquid soap is made with KOH (potassium hydroxide) as opposed to NaOH (sodium hydroxide) used in bar soap. The amount of KOH needed is also different from that needed when using NaOH. Liquid soap also can only be made in a hot process method that could take up to 2 days for a full reaction to occur and turn your ingredients to soap. Liquid soap is a fickle process that requires the mixture to remain in a certain Temperature range (usually 165-185 F) where too low and the mixture will resist transformation and too high you risk scorching. You also have to Periodically stir the mixture as the “oil” and water components will separate if left alone until the reaction process is fully complete. Then the soap can diluted with water to meet your desired consistency.
There are other factors to take into consideration when making a liquid soap, such as humidity. KOH will start to absorb water when exposed to the air; so, the higher the humidity and/or the longer it is exposed, the more moisture it can and will absorb. So the older the KOH and/or the more humid the environment will require additional KOH added to the recipe otherwise the soap will end up superfatted (fats left relatively unchanged). If too much extra is added then the excess lye (KOH) can cause adverse reactions with your skin (and no one wants that). There is a way to test for excess lye using a compound whose name currently escapes me; however, testing for excess fats is easy. Simply dilute a small amount of liquid soap in water (about a 1:3 to 1:5 ratio) and if the water is cloudy, then there is excess fats present. HOWEVER, if the reaction between the fats and lye has not full finished, both of these will test positive for excess.
I don’t mean to scary you away from liquid soap making. I just want to let you know there is a way to do it, the process just requires more time and attention than that of bar soap. This is why I think most never get into it.
Is is necessary to use grapefruit seed extract in this soap recipe? If so how many drops should be used ?
DIY Cosmetics says
Thank you for such an informational site and tips. Could we use cold process to make this shampoo bar?
I want to make this for a friend who is allergic to coconut oil, is there a substitute?
What size mold did this fit in?
Donna G. says
Hi there……I just finished making the Rosemary-Mint Shampoo bars. They smell amazing….but mine turned out rather yellow…..not beautiful white like the picture…..any suggestions?
May I substitute sunflower oil with avocado oil? Thanks
clinica de estetica tatuape says
How amazing, I should use some specific conditioner after washing my hair with this shampoo
I make this and loveeeeeeeeee! Thanks very good!!
I made this shampoo bar (hot process) I love it.. It’s just a little bit soft. I don’t know what I’ve missed! Is there any way I can fix it?
Soft when removing from mold and cutting? Wait a 1/2 day longer. Soft when trying to use the bar? Let it cure a few weeks (lightly covered in a place where the extra moisture can evaporate). The longer you wait, the harder your bars become.
I loved your creativity Colleen, especially with these natural products and do not detract from our health, I imagine the smell … … should be very tasty
Dermavyn Funciona says
I did this weekend at my mother’s house and it was amazing. Thanks for sharing!
Barbie Molly says
Simple, practical and delicious. I loved the result. Thanks for sharing!
Moly Silva says
I make this and loveeeeeeeeee! Thanks and sorry for my bad english. Regards from Brazil. Love your blog :)
I have been making soap for many years and i have a few things to mention~
>Making soap seems daunting but is really easy, and a typical batch makes about 15-4 oz bars,
so will last years, depending on the size of your family.
>We grate our soap an have been using it for laundry for several years.
> One does not need all of those oils to make a great shampoo bar.
You can use one, if it is olive oil, vegetable oil, or lard. and it is much cheaper as well.
> I have discovered through experience that if you have shoulder-length or longer hair, the shampoo bars don’t ever seem to rinse out completely and your hair doesn’t feel clean.
Do these bars work well on fine/oily hair? I’ve never used shampoo bars before but these sound great! Thanks for sharing.
Pablo Tuffano says
Excellent recipe, to own use and gift. Thanks a lot.
I used the shampoo bars a lot and I’ve never had this problem! Axei it excellent.
What kind of lye do you use?
Is there any soap making books you know of that have chapters on shampoo bars?
What oil can be substituted for the sunflower oil? I cannot find it anywhere and would like to make the shampoo bars tomorrow.
Safflower. It’s carried in most grocery stores
When one uses a shampoo bar, what is used for conditioner? Or is conditioner not necessary?
I use Kirk’s Cocca Butter Castile soap as shampoo, followed by a 1:4 mix of ACV and water. Works wonderfully, leaves hair soft, tangle free, and easy to manage (Also completely cured my dry scalp)
I made these shampoo bars using the hot process method and they came out as more of a tan caramel color. Not the pretty off white but they work beautifully and I love them. Thanks for sharing!
Hello, how many bars does this make? 15 ml is the size of a large essential oil bottle and that is LOT and can be quite expensive. Thanks!
Grow Forage Cook Ferment says
It depends on how thick or thin you cut them, but around 10 large sized bars. Peppermint essential oil is usually on the cheaper end compared to other oils, and you can always use less if you’d like.
Have you made this as a hot process soap? I am wondering how the color is affected. Thanks :)
Grow Forage Cook Ferment says
I have not, but I will ask Jan Berry, the author of the eBook, if she has and what the results were.
Hi…don’t you think, hair become sticky if using shampobar?
Grow Forage Cook Ferment says
I’ve used shampoo bars a lot and I’ve never had that issue!
Becky Holmes says
My (sensitive-skin) family have been using shampoo bars for a few years- it was so nice to find something that none of us have a sensitivity to! I make soap already- having read this I may be branching out into shampoo bars.