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Jupiter
Jupiter shaving soap on WhollyKaw's Siero base. Cosmic / mythological fragrance composition. Made in small batches in our New Jersey workshop.
Jupiter is a cosmic / mythological shaving soap on the Siero base, made in small batches in our New Jersey workshop. Available in Tallow and Vegan builds.
Quick facts
| Detail | What it is |
|---|---|
| Scent family | Cosmic / mythological |
| Base | Siero — tallow plus whole donkey milk + whole water buffalo milk + water buffalo milk whey |
| Weight | 4 oz / 114 g per puck |
| Lather | Dense, slick, builds in 30–45 seconds with a wet brush in cool water. |
| Where it’s made | Our New Jersey workshop. Small batches, single-vessel saponification. |
| Builds | Tallow - Crème Fraîche ($24.99) / Tallow - Siero ($29.99) / Vegan ($22.99) — same fragrance compound, different fat structures. |
What Jupiter smells like
Jupiter — king of the Roman gods, the largest planet, the dominant figure. The soap is built around the gravitas the name implies: full-bodied, commanding, with the kind of fragrance complexity that holds attention through the shave.
A captivating fragrance that combines the spicy warmth of cardamom and leather with the delicate sweetness of lavender and jasmine. This perfume evokes a sense of mystery and allure, as it unfolds into a rich and sensual base of amber, musk, patchouli and cassia. A perfect choice for those who love complex and sophisticated scents.
The fragrance is built on lavender and jasmine emerge, casting a spell of timeless elegance. The opening is brightest, the heart settles in around the twenty-minute mark, and the dry-down lasts for hours after the rinse.
Tallow or Vegan — which to pick
Jupiter is offered in two builds. They share the same fragrance compound (so the scent journey is identical) but the fat structure underneath is different.
Tallow - Crème Fraîche ($24.99) is the original Siero formulation. The conditioning is denser; the lather has more body. If you’ve shaved with WhollyKaw Siero soaps before, this is the same direction.
Vegan ($22.99) swaps tallow for plant-derived fats (kokum, shea, cocoa, mango). Same fragrance compound, lighter lather body, brighter and cleaner under the razor.
Who Jupiter is not for
Honest limitations:
- Fragrance-sensitive skin. Jupiter has a real fragrance load. If our unscented Bare Naked Shaving Soap (Tallow build) or Sans Parfum Vegan Shaving Soap (Vegan build) is what your skin tolerates, this isn’t the soap to switch to.
- Strict dairy allergies. Tallow builds contain saponified dairy proteins. Most contact-dermatitis reactions to dairy are with raw milk, not saponified milk soap, but if you have severe sensitivities, test a sample before committing to a puck.
- Looking for a designer-fragrance clone. Jupiter is its own composition, not an interpretation of a popular fragrance.
- Pucks-as-decor shavers. The puck is meant to be used. The fragrance is most expressive in the lather; sniffing the puck doesn’t do it justice.
Cost per shave
A 4 oz / 114 g puck of Jupiter lasts most shavers ~5 months with daily shaves:
- Tallow - Crème Fraîche ($24.99 / ~150 shaves) ≈ $0.17 per shave
- Tallow - Siero ($29.99 / ~150 shaves) ≈ $0.20 per shave
- Vegan ($22.99 / ~150 shaves) ≈ $0.15 per shave
For comparison, a single-use disposable cartridge plus a foam can typically runs $0.40–$0.60 per shave with worse skin feel.
What's in the soap
Tallow build:
Aqua (Water), Potassium Stearate, Sodium Stearate, Potassium Tallowate, Sodium Tallowate, Potassium Ricinoleate, Sodium Ricinoleate, (Vegetable) Glycerin, Lac Asinae (Donkey Milk), Potassium Shea Butterate, Sodium Shea Butterate, Garcinia Indica (Kokum) Butter, Theobroma Cacao (Cocoa) Butter, Crème Fraîche, Humulus Lupulus (Hops) Extract, Parfum (Fragrance), Linoleic Acid, Linolenic Acid, Lanolin, Phenoxyethanol, Caprylyl Glycol, Sorbic Acid,.
Vegan build:
Potassium Stearate, Sodium Stearate, Aqua, Glycerin, Potassium Ricinoleate, Sodium Ricinoleate, Potassium Mango Stearate, Sodium Mango Stearate, Potassium Shea Butterate, Sodium Shea Butterate, Garcinia Indica (Kokum) Butter, Theobroma Cacao (Cocoa) Butter, Hydrolyzed Sodium Hyaluronate, Sodium Hyaluronate, Polyquaternium-10, Linoleic Acid, Linolenic Acid, Humulus Lupulus (Hops) Extract, Soybean Glycerides, Shea Butter Unsaponifiables, Phenoxyethanol, Ethylhexylglycerin, Fragrance,.
Contains no parabens, no chemical sulfates, and no synthetic dyes. Fragrance is a custom compound mixed by an American perfumer to our spec.
If you like the scent profile of Jupiter, also try
Cross-references from our shaving-soap catalog by shared notes:
- Eroe — shares the lavender note
- Man from Mayfair — shares the lavender note
- Fougère Bouquet — shares the lavender note
- Belgravia — shares the jasmine note
What customers say
★★★★★
Wow
As usual every WK soap I’ve been using it is great. Foam 5/5, cover 5/5, glide 5/5, post shave 5/5 I shave with straight razor so all the above are essential for good shave. The WK soaps are hands down the best on the market.
Frequently asked questions
How long does a puck of Jupiter last?
Most shavers get 5 to 6 months out of a 4-ounce puck with daily shaving. The Siero base lathers efficiently — you don't need to load heavily — so a puck stretches further than a typical mass-market soap.
What does Jupiter smell like?
See the scent walkthrough on the page above for the structured top/heart/base note breakdown. Jupiter is a cosmic / mythological composition that develops over a 3-4 hour wear time on skin.
Why is it called Jupiter?
Jupiter — king of the Roman gods, the largest planet, the dominant figure. The soap is built around the gravitas the name implies: full-bodied, commanding, with the kind of fragrance complexity that holds attention through the shave.
Tallow or Vegan — which build to pick?
Tallow build is the original — beef tallow plus whole donkey milk on the Siero base, denser conditioning lather. Vegan build swaps tallow for plant-derived fats (kokum, shea, cocoa, mango), lighter lather body, same fragrance compound. Pick on dietary preference; both share the scent journey.
Do I need a brush, or can I lather with my hands?
Jupiter is a hard puck designed for brush use. A synthetic or boar brush builds the best lather. Hand-lathering works in a pinch but won't get the dense, conditioning lather the soap is designed for.
Is Jupiter a moisturizing shaving soap?
In the way most shavers use the word — yes. People search for "moisturizing shaving soap" looking for a soap that leaves skin feeling conditioned, hydrated, and protected. The technical term we use is "conditioning" because the soap is rinsed off, but the experience matches what people mean. Jupiter on our Siero base delivers exactly that conditioned skin feel. For an actual leave-on moisturizer, pair with our grass-fed tallow zinc oxide cream.
Can I use Jupiter in cold water?
Yes — Siero soaps lather well in cool water with a 30-45 second build. Hot water gives a slightly faster build but isn't necessary.
Where is Jupiter made?
In our New Jersey workshop. Saponification, scenting, pressing, and packaging all happen in house. The fragrance compound is mixed by an American perfumer.