Brine soap, known as Soleseife (pronounced: zo-luh-zigh-fuh), is a traditional German soap historically made with seawater. Often called sea salt brine soap, Soleseife combines the simplicity of traditional soapmaking with a distinctive formulation that produces a long-lasting, smooth bar.
Salt has long been valued for its many practical uses, including food preservation and bathing. Sea salt brine soap is a more specialized approach to traditional soapmaking, replacing standard distilled water with a concentrated sea salt brine solution during the lye stage to influence the finished bar's texture and hardness.
Today, Soleseife has found a place in modern cold-process soapmaking, appealing to people who appreciate traditional, artisan craftsmanship.
What Is the Difference Between Brine Soap and Sea Salt Soap?
Brine soap and traditional sea salt soap are not the same.
Sea salt brine soap (Soleseife) is made by dissolving salt in the liquid used to prepare the soap. The result is a smooth, creamy bar.
Sea salt soap is crafted with whole sea salt crystals. Added at the end of cold-process soapmaking, it has a noticeable texture that sets it apart from ordinary bar soap.
Benefits of Sea Salt Brine Soap
Provides gentle and effective cleaning without being harsh on the skin.
Retains skin-nourishing trace minerals found in sea salt such as magnesium, potassium, and calcium, known to support the skin barrier and improve skin appearance.
Formulated with plant-based oils and shea butter, Soleseife creates a rich, creamy lather that moisturizes without leaving your skin feeling stripped or overly dry.
Sea salt in cold-process soapmaking creates a denser soap bar, making it harder and longer-lasting.
A well-made bar of soap can be a simple alternative to some liquid cleansers packaged in plastic bottles. Choosing a bar with considered ingredients, responsible packaging, and a long useful life can also support a more mindful personal care routine.
How to Use Your Soleseife Bar
Wet: Wet your face or body with warm water and gently work the bar between your hands or directly onto damp skin.
Cleanse: Massage the creamy lather over your skin, avoiding the eye area.
Rinse: Rinse thoroughly with warm water, followed by a cool-water rinse.
Moisturize: Follow with Inlet Soap Co. Ocean Mineral Misting Lotion, infused with sea kelp to leave skin feeling soft, refreshed, and hydrated.
Pure Soleseife
Fragrance-free and made with only natural additives.
Tip: Keep your bar dry between uses to help it last longer.
Discover Soleseife at Inlet Soap Co.
At Inlet Soap Co., we make small-batch soap inspired by the coast. Our Soleseife collection offers a smooth alternative to our signature textured sea salt soap bars, bringing traditional sea salt brine soapmaking into your everyday routine.
Our Pure Soleseife Face & Body Bars are fragrance-free and made with only natural additives such as activated charcoal, Dead Sea mud, and Irish sea moss. Each bar offers its own distinctive look and formulation without added fragrance or colorants.
Our Sea Salt Brine Bars bring a little more personality to your daily routine. These bars feature our signature fragrance blends and playful colors, pairing a creamy lather with scent combinations inspired by the coast, familiar favorites, and unexpected discoveries. They also offer a smooth alternative to our textured sea salt soaps, but with a little extra color and character.
Sea Salt Brine Bar
Signature fragrance blends and playful colors.
Every bar is made without palm oil and packaged without plastic, reflecting our commitment to more mindful product choices.
Shop Pure Soleseife & Salt Brine Bars
Smooth, handcrafted soap made using the traditional Soleseife salt-brine method.
→ Soleseife Soap Bars | Smooth Salt-Brine Soap
Continue Your Ocean-Inspired Ritual
Loved learning about traditional German Soleseife? Explore more sea-inspired essentials from Inlet Soap Company.
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Shop Handmade Sea Salt Soap
Discover our flagship product, the textured sea salt soap bar, made with nourishing oils and ocean-inspired scents.
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Explore Inlet Soap Co.’s Sustainable Bath And Shower Accessories
Looking to upgrade your routine? Discover our eco-friendly, plastic-free bath and shower loofahs, sponges, and soap dishes.
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