Tired of chemical-filled detergents that trigger allergies? As someone who's relied on my grandmother's time-tested recipe for years, I can vouch for this 100% natural, simple-to-make liquid laundry detergent using authentic Marseille soap. It's gentle on sensitive skin—even babies'—yet powerfully effective against stains.

Contents
- Ingredients
- Step-by-Step Instructions
- Result
- Usage
- Pro Tips
Ingredients
- 100 g pure Marseille soap
- 3 tablespoons baking soda
- 20 drops lavender essential oil (optional)
- 2 liters hot water
- 1 liter cold water
- Cheese grater
- Large container
- Wooden spoon
- Funnel
- Immersion blender
- Clean 3-liter empty container
Step-by-Step Instructions
- Grate the Marseille soap into fine shavings.
- Add shavings to the large container.
- Boil 2 liters of water.
- Pour hot water over soap and stir with wooden spoon until dissolved.
- Mix in baking soda.
- Let stand for 24 hours.
- Add 1 liter cold water and blend until smooth.
- Incorporate essential oil if using.
- Funnel into your storage container.
Result

Your homemade Marseille soap detergent is ready! This straightforward recipe yields a potent, natural cleaner that's been a staple in households for generations. Marseille soap's proven stain-fighting prowess shines through, while remaining incredibly skin-friendly—no more rashes or irritations from harsh chemicals. Plus, that fresh lavender scent lingers beautifully.
How to Use
Shake well before each use to ensure even consistency. Dose like standard non-concentrated detergents using your machine's cap.
Pro Tips
- Opt for pre-made Marseille soap flakes to skip grating.
- The mix gels after 24 hours—totally normal; it liquefies with blending and cold water.
- Store at room temperature, away from extremes.
- For tough stains, add detergent directly to the drum with soda crystals for superior results.