Nothing beats a heat, comforting bathtub after a protracted, tiring day. Besides, maybe, utilizing your personal selfmade, pure bathtub merchandise. That’s why at the moment I’m going to point out you the best way to make a easy blooming bathtub oil that can elevate your bathtub expertise and make you are feeling such as you’re on the spa.
This luxury bathtub oil takes simply 10 minutes to make and anybody can recreate it. In truth, you gained’t consider how simple it’s to make and the way wonderful it feels on the pores and skin. And I simply know you’ll fall in love with its “blooming” impact. When this oil touches water, it transforms right into a silky, milky texture that deeply nourishes and moisturises your pores and skin. Plus, it’s received a stunning floral scent and a surprising pink/crimson color.
Whether or not you’re new to formulating or already a seasoned professional, this bathtub oil is the right strategy to deal with your self or shock somebody particular. So let’s get proper into it!
What’s a shower oil?

A shower oil is an expensive, moisturising product designed to be added to your heat bathtub water. It’s sometimes comprised of a mix of oils that assist moisturise, nourish, and soothe the pores and skin whereas offering a calming bathtub expertise. I’ve added important oils and colouring to mine for a extra sensorial expertise.
Why you’ll love this bathtub oil


This isn’t simply any bathtub oil—it’s an expertise for each your pores and skin and senses. Right here’s why you’ll adore it:
- Altering texture: This bathtub oil transforms right into a silky, milky resolution the second it hits the water, therefore the “blooming” impact.
- Hanging color: The colourful pink/crimson color, derived from the gromwell plant, provides a enjoyable and vibrant contact to your bathtub.
- Moisturising properties: This bathtub oil has wonderful nourishing properties because of its plant oils, which go away your pores and skin feeling moisturised.
- Stress-free scent: Bergamot, lavender and ylang-ylang important oils pair collectively for a relaxing, floral perfume – good for unwinding.
However better of all, this blooming bathtub oil is tremendous simple and satisfying to make. It’s additionally totally customisable, as you’ll discover out within the sections under.
Key elements
Earlier than we dive into the formulation, let’s simply take a second to look at the important thing elements of this bathtub oil and uncover what makes this bathtub oil so particular.
Castor oil
INCI: Ricinus Communis Seed Oil
I’ve chosen castor oil for its wonderful moisturising and skin-conditioning properties. This oil creates a silky, easy texture that locks in moisture, leaving your pores and skin tender and moisturised– good for a shower oil. Plus, it’s filled with ricinoleic acid, an omega-9 unsaturated fatty acid, which helps soothe and shield the pores and skin. Study extra about castor oil under:
MCT
INCI: Caprylic/Capric Triglyceride
I’ve additionally used MCT on this bathtub oil for its fast-absorbing, light-weight texture that leaves your pores and skin tender with out feeling non-greasy. MCT is a triglyceride containing medium-chain fatty acids and may be produced by separating a fraction of coconut, palm or different oils. It can be hydrogenated.
In the event you’d like to seek out out extra about botanical oils, try our Botanical Oils Mini Lab on our unique membership web site, the Lab at System Botanica.
Plum oil
INCI: Prunus Domestica Seed Oil
Plum oil is considered one of my favorite elements on this bathtub oil. It’s a extra valuable botanical oil that provides an additional contact of luxurious to this formulation. Whereas I selected the opposite elements as a result of I already had them in my formulation stash, plum oil was my particular selection.
Whereas I used bigger quantities of MCT and castor oil to maintain the method budget-friendly, I wished so as to add a singular and valuable ingredient, so plum oil made the minimize. This oil is wealthy in antioxidants, important fatty acids, and nutritional vitamins, which nourish the pores and skin whereas offering a delicate, pleasant perfume. In the event you’re excited by studying extra about plum oil, I like to recommend you hearken to this fascinating podcast episode:
PGMO.4
INCI: Polyglyceryl-4 Oleate
The star ingredient on this formulation is PGMO.4, a water-in-oil (w/o) emulsifier that makes this bathtub oil actually magical. It’s the important thing to the blooming impact: when the oil meets water, it turns right into a silky, milky emulsion that disperses fantastically in your bathtub. This ensures the oils mix seamlessly with the water, creating an expensive expertise with out leaving a greasy residue in your pores and skin or bathtub.
You possibly can study extra about emulsifiers within the weblog posts under:
Every little thing you wished to find out about pure emulsifiers
Solubiliser vs. emulsifier: Which one do you want?
17 factors to think about earlier than selecting an emulsifier
Extra elements
Important oils
INCI: Citrus Aurantium Bergamia Peel Oil/Lavandula Angustifolia Oil/Cananga Odorata Flower Oil
I’ve additionally added some important oils to this oil to make it aromatic. I’ve chosen a mix of bergamot, lavender, and ylang-ylang important oils for his or her calming, floral aroma, good for creating a calming spa-like expertise.
INCI: Helianthus Annuus Hybrid Oil, Simmondsia Chinensis Seed Oil, Lithospermum Erythrorhizon Root Extract
Gromwell extract is what provides this bathtub oil its pure pink-red color. It provides a playful contact to the formulation, which may elevate your bathtub expertise. To study extra about different plant-based colourants, try this publish:
Vitamin E
INCI: Tocopherol
Vitamin E is a robust antioxidant that may assist lengthen the shelf lifetime of the oils and subsequently of your product. It additionally has skin-conditioning properties, leaving your pores and skin feeling nourished and tender after your bathtub.
You possibly can study extra about antioxidants in our devoted Antioxidants Mini Lab, on the Lab at System Botanica.
Formulation breakdown


This blooming bathtub oil is a nourishing deal with that transforms right into a silky, milky resolution when it meets water. Simply add a splash to your bathtub and prepare to chill out!
Makes: 50g
Formulation: Chilly-process
Time: 10-Quarter-hour
Degree: Newbie-friendly
| A | Castor oil | Ricinus Communis Seed Oil | 17.50 |
| A | Medium chain triglycerides (MCT) | Caprylic/Capric Triglyceride | 15.90 |
| A | PGMO.4 | Polyglyceryl-4 Oleate | 10.00 |
| A | Plum oil | Prunus Domestica Seed Oil | 5.00 |
| B | Bergamot important oil | Citrus Aurantium Bergamia Peel Oil | 0.50 |
| B | Lavender important oil | Lavandula Angustifolia Oil | 0.25 |
| B | Ylang-ylang important oil | Cananga Odorata Flower Oil | 0.25 |
| B | Vitamin E | Tocopherol | 0.50 |
| C | Gromwell oil extract | Helianthus Annuus Hybrid Oil, Simmondsia Chinensis Seed Oil, Lithospermum Erythrorhizon Root Extract | 0.10 |
| Complete: 50.00 |
Tools:
- Scales
- Glass beaker
- Glass rod
- Chrome steel spoons
- Watch glass
- Pipettes
- Bottle
Our formulation: Make a blooming bathtub oil
Making this blooming bathtub oil is extremely simple and takes simply 10 minutes. Are you prepared? Let’s get into it!
Step 1: Put together your workspace


Begin by establishing a clear and organised workspace. Sanitise all of your utensils and work space to make sure a hygienic surroundings to make your bathtub oil. Don’t neglect to placed on gloves and put on an apron to guard your self and your formulation. Study extra about establishing your property formulation lab on this weblog publish.
Step 2: Weigh your botanical oils and emulsifier


Subsequent, set your glass beaker onto your scales and tare them (to take action, merely press the “tare” button). Weigh your castor oil, MCT, plum oil and emulsifier, taring the scales after every ingredient. Combine the mix gently with a glass rod till all elements are totally mixed.
Step 3: Weigh your important oils and vitamin E


Now, weigh the important oils and vitamin E right into a watch glass. Then, add them to the beaker containing the oils and stir gently. If you’re extra skilled, you possibly can add these elements instantly into your foremost beaker.
Step 4: Add your pure colourant


When you’ve stirred your mix, set a watch glass onto your scales and tare them. Weigh the gromwell extract (which naturally colors your bathtub oil a stunning pink-reddish shade) after which add it to your foremost beaker. Stir gently till all elements are totally mixed. As soon as once more, you possibly can weigh the colourant instantly into the primary beaker should you’re feeling assured.
Step 5: Package deal and label


Lastly, switch your combination to a bottle, label and luxuriate in! To make use of, your bathtub oil, merely pour it into your bathtub water and watch it flip into an expensive milky resolution.
Formulation notes:
This method is extremely simple to make and there shouldn’t be any challenges alongside the way in which. Simply bear in mind 50g of oil doesn’t equal 50ml, so it’s finest to make use of a bigger beaker to keep away from spills.
As talked about earlier, the star of this bathtub oil is PGMO.4, which supplies it that magical blooming impact when it meets water. However should you’re inquisitive about alternate options to PGMO.4, I’ve additionally experimented with a mixture of Softfeel PP (INCI: Polyglyceryl-3 Palmitate) at 10% and GMCY (INCI: Glyceryl Caprylate) at 10%. It labored fantastically and delivered related outcomes, however it required heating to mix correctly, which is why I caught with PGMO.4. Nonetheless, be happy to experiment! The sky is basically the restrict with this method, because it’s endlessly customisable.
And should you’d wish to attempt different pure bathtub merchandise, why not attempt making these enjoyable bathtub bombs?
Customising your bathtub oil


This blooming bathtub oil is customisable so you possibly can totally make it your personal. Listed below are a number of solutions on how one can swap and tweak elements:
Plant oils
You possibly can simply change the plant oils with alternate options you like or have readily available. Since this bathtub oil will finally go down the drain, I like to recommend avoiding overly costly or valuable oils for on a regular basis use. Nonetheless, should you’re making it for a special day, be happy so as to add some extra valuable oils – however accomplish that mindfully. Listed below are a number of oils you could possibly attempt:
Prime 10 botanical oils each formulator wants
Colourants
The reddish-pink tint on this formulation comes from a selected colourant, however you don’t have to stay to it – and even use a colourant in any respect! For related outcomes, you could possibly attempt alkanet extract for a pink shade or experiment with colored oils like sea buckthorn or buriti to realize a heat, orangey tone. Simply make sure you use an oil-soluble colourant that blends seamlessly. Listed below are different concepts of pure colourants you could possibly use:
Important oils
The important oils are additionally totally customisable, letting you discover totally different themes or moods. As an illustration, I’ve tried blends like rosemary and peppermint for a refreshing, invigorating expertise.
You possibly can create a model tailor-made to your preferences or the event – making this bathtub oil as particular and distinctive as you need it to be! Whether or not you need one thing calming, uplifting, or energising, the selection is totally yours. Discover extra about important oils under:
Episode 6: Important oil security with Robert Tisserand
Why it is best to by no means measure important oils in drops
Prepared to start out formulating?
I hope you’ll take pleasure in making this blooming bathtub oil as a lot as I did! I’d love to listen to about your expertise and customisations within the feedback under.
And, should you loved this formulation, simply think about what else you could possibly create! Why not take the subsequent step and learn to make your personal natural skincare from residence? Try our FREE mini formulation course to find simply how simple, enjoyable, and empowering it’s to create your personal merchandise and develop into an natural formulator.
Be part of us NOW and begin your formulation journey at the moment!
FAQ
A shower oil is a good addition to your bathtime routine, designed to nourish and moisturise your pores and skin whereas offering a calming sensory expertise. The tub oil I created stands out for its remodeling texture, turning from an oil mix right into a milky resolution when it hits the water. Its pleasant pink/crimson colouring and soothing floral scent makes it good for particular moments – or just treating your self.
- How do you employ this bathtub oil?
To make use of, merely add the specified quantity of bathtub oil to your heat bathwater. Because it mixes with the water, it blooms right into a milky resolution, dispersing evenly, therefore the title of the formulation. This oil doesn’t go away any residue within the tub, so that you don’t have to fret about that.
- What does it seem like, really feel like, and scent like?
This bathtub oil is a barely viscous, translucent pink/crimson liquid. It has a tender floral perfume with calming notes of bergamot, lavender, and ylang-ylang, providing a calming and indulgent bathtub expertise.
- How will you customise this bathtub oil?
This formulation is totally customisable. You possibly can swap out plant oils and important oils to fit your preferences and experiment with totally different colors. Understand that this oil is supposed for the tub, so the elements will finally wash away down the drain, so keep away from utilizing your entire valuable elements in a single go.
Steered suppliers
Lots of the suppliers under ship internationally and I’ve included their nation or regional base to your comfort.
I discovered the PGMO.4 at Alexmo, however you too can supply Durosoft PG4-0 from Bay Home Aromatics and some different suppliers. Whereas the INCI is similar, there are slight variations within the elements. For the gromwell extract, I sourced it from Aroma Zone (it’s known as Rouge Grenadine), however you too can discover it at Dauphine Organics. Blissful sourcing!
Aroma-Zone (EU)
Aromantic (UK)
Alexmo Cosmetics (EU)
Manske (EU)
The Cleaning soap Kitchen (UK)
Ellemental (EU)
Lotioncrafter (USA)
Important Labs (USA)
Go Native NZ (New Zealand)
Naturally Balmy (UK)
O&3 – The Oil Household (UK/EU)
Cleaning soap & Extra (Canada)
Handymade (EU)
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Beatriz Amaral, a beauty scientist labored at System Botanica from 2021 – 2025. Learn extra concerning the System Botanica workforce.
