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What Are Soap Flakes?
Soap flakes are simply pure soap in dried, grated form—usually made from saponified vegetable oils like olive or coconut. These flakes dissolve in warm water to create a gentle yet effective laundry solution.
They contain no synthetic fragrances, enzymes, preservatives, or brighteners, making them a trusted choice for delicate laundry and eco-conscious homes.
A Brief History of Soap Flakes
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Pre-1950s: Soap flakes were the gold standard for household laundry, especially in Europe.
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France & Mediterranean countries: People often shaved down bars of Savon de Marseille to create flakes at home.
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Post-WWII: Chemical detergents surged in popularity due to their convenience and performance in hard water.
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Now: Soap flakes are regaining popularity for being zero waste, natural, and gentle on skin and fabrics.
Sustainability Benefits of Soap Flakes
✅ 100% biodegradable
✅ No petrochemicals or phosphates
✅ Plastic-free packaging options
✅ Low-waste, low-energy manufacturing
✅ Often vegan, cruelty-free, and palm-free
Soap flakes are a minimal-impact product, making them ideal for eco-conscious households looking to simplify and reduce exposure to chemicals.
How to Use Soap Flakes in Laundry
For Machine Washing:
Dissolve 25g in a one litre of boiling water.
Stir until fully melted.
Allow to cool & store ready to use
Pour 30-50ml into the detergent drawer or directly into the drum.
Wash as required.
✅ Add 50 ml of white vinegar to the rinse compartment to prevent soap residue.
For Handwashing:
Dissolve a small sprinkle of flakes in warm water.
Soak delicates or wool items.
Rinse thoroughly.
Bio vs Non-Bio Detergents: Where Do Soap Flakes Fit?
What’s the difference?
Bio Detergent
Non-Bio Detergent
| Contains enzymes? | ✅ Yes – for breaking down stains | ❌ No enzymes – gentler on skin |
| Cleaning power | Excellent on tough stains (especially at low temps) | Good, especially with hot water |
| Skin sensitivity | Can irritate sensitive skin or eczema | Gentler, often recommended for babies |
| Synthetic additives | Usually includes brighteners, perfumes, etc. | May still include perfumes and softeners |
| Eco-friendliness | Varies – often more chemical-heavy | Generally lower but depends on the formulation |
Where do Soap Flakes fall?
Soap flakes are neither bio nor non-bio in the traditional detergent sense.
They are soap-based, not detergent-based, meaning they don’t contain enzymes, surfactants, or synthetic softeners at all.
✅ Gentler than both bio and non-bio
✅ Better for babies, sensitive skin, and allergy-prone households
✅ Ideal for those avoiding synthetic chemicals entirely
❗ May require hotter water (or pre-dissolving) for full effectiveness
❗ Can leave residue in hard water unless rinsed with vinegar
Comparing Soap Flakes to Modern Detergents
Feature Soap Flakes Non-Bio Detergent Bio Detergent
| Ingredients | Natural oils, lye, water | Synthetic but enzyme-free | Synthetic with enzymes |
| Fragrance/Additives | None (or very mild if scented) | Often perfumed | Usually perfumed |
| Suitable for sensitive skin | ✅ Excellent | ✅ Generally safe | ❌ May cause irritation |
| Effectiveness on stains | Moderate (boost with soda or vinegar or Percarb) | Moderate | High – enzymes target stains |
| Environmental impact | ✅ Low – fully biodegradable | Moderate – depends on brand | Often higher due to added chemicals |
| Ideal for | Babies, allergies, delicates, natural living | Babies, general household | Heavy-duty stains, sportswear |
Allergies, Skin Concerns & Sensitivities
Soap flakes are ideal for:
Newborn clothing and cloth nappies
People with eczema, dermatitis, psoriasis
Natural fibre clothing (cotton, wool, silk)
Sensitive noses (no strong synthetic scent)
Tip: Always rinse thoroughly. If you have very hard water, consider a vinegar rinse or natural softener to avoid residue buildup.
What to Look for in Quality Soap Flakes
✔️ Made with olive oil, coconut oil, or sunflower oil
✔️ Free from SLS, petrochemicals, or synthetic preservatives
✔️ Vegan & cruelty-free options available
✔️ Plastic-free packaging preferred
✔️ Traditional sources like Savon de Marseille flakes are ideal
Bonus: Boosting Your Natural Laundry
Pair soap flakes with other sustainable laundry helpers:
White Vinegar – Natural fabric softener and residue remover
Sodium Bicarbonate – Gentle deodoriser and laundry booster
Sodium Percarbonate - Whitens whites, brightens denim, removes tough stains.
Essential Oils – Add 2–3 drops to vinegar for a delicate scent
Soap Nuts or Wool Dryer Balls – To reduce static and soften clothes naturally
Final Thoughts
Soap flakes offer a simple, effective, and planet-friendly way to wash clothes. While they may need a little more prep than modern detergents, the trade-off is less waste, fewer irritants, and a gentler approach to everyday cleaning.
For those seeking a truly natural laundry routine, soap flakes are a timeless choice that blends tradition with sustainability.
Oh, and they are VERY economical.