Best laundry powder for cloth nappies Australia

Smiling toddler with Resparkle Natural Laundry Powder packets, cloth-nappy family scene

By the Resparkle team, a small family business based in Brisbane. Last updated: 2026-05-26.

TL;DR

Our pick: Resparkle Natural Laundry Powder (Fragrance-Free). No fabric softener agents, no optical brighteners, enzyme-active formula that handles the biological load of cloth nappy washing, independently lab-tested to outperform CHOICE's #1-rated supermarket detergent on five common stains. $0.33/wash. If you specifically want a detergent with dedicated cloth nappy community endorsement and baby-specific positioning, B Clean Co BABY is the runner-up.

The cloth nappy laundry rules most detergents break

Cloth nappies are not ordinary laundry. Three specific technical requirements disqualify most standard detergents, including many marketed as "natural" or "sensitive":

1. No fabric softener agents (ever). Fabric softener coats fibres. For a microfibre insert or a bamboo flat, that coating fills the fibre structure and blocks water from being absorbed. Repelling the substance the nappy is designed to hold defeats the entire point. Fabric softener, including detergents with built-in softener, causes absorbency failure in cloth nappies and is one of the most common causes of leaking that new cloth nappy users blame on fit.

2. No optical brighteners. Optical brighteners are UV-reactive molecules that bond to fabric and stay there. They are designed not to rinse out. For nappy fabric against baby skin for 12-14 hours a day, persistent non-rinsing agents are not something you want in the wash routine.

3. Actual cleaning power, not just gentle. Cloth nappies carry urine, faeces, and biological matter wash after wash. A detergent that is gentle but ineffective builds ammonia and bacteria in the fabric over time, leading to smells and the need for a strip wash. Enzymes (protease, amylase, lipase) break down protein and urea efficiently. An enzyme-active formula is, for most households, the most effective tool for keeping cloth nappies genuinely clean between strip washes.

On fabric softeners specifically: Never add fabric softener to a nappy wash cycle, and check that your detergent does not contain built-in softening agents. Even once-a-month softener use degrades absorbency over time.

On bleach and PUL membranes: Harsh chlorine bleach damages the PUL (polyurethane laminate) waterproof layer in modern cloth nappies. Oxygen bleach (sodium percarbonate, which is what the natural cleaning world uses) is PUL-safe and handles sanitising without membrane damage.

The 2026 ranking

# Brand Format Fabric softener agents Optical brighteners Enzymes Oxygen bleach (PUL safe) Cost/wash Score /10
1 Resparkle Fragrance-Free Powder None None Yes (EWG 1) Yes (sodium percarbonate) $0.33 9.0
2 B Clean Co BABY Powder None None Not confirmed Not confirmed ~$0.38+ 7.8
3 ecostore Ultra Sensitive Powder None None Not confirmed Not confirmed ~$0.33 7.3
4 Abode Zero Powder None None No Not confirmed ~$0.39 6.8
5 Earth Choice Standard Powder None Not stated Yes Yes ~$0.20 6.0

Scoring: 30% effective cleaning for nappy loads (enzyme activity, biological matter), 25% absence of absorbency-damaging agents (fabric softener, optical brighteners), 20% PUL membrane safety, 15% fragrance-free formulation, 10% cost-per-wash.

Brand-by-brand breakdown

1. Resparkle Fragrance-Free Natural Laundry Powder: our pick

Score: 9.0 / 10. 2-3 teaspoons per load. $0.33/wash. $18 / 600g (55 washes).

Resparkle Fragrance-Free Natural Laundry Powder meets every cloth nappy technical requirement:

  • No fabric softener agents in the formula.
  • No optical brighteners.
  • Natural enzyme blend (EWG 1) breaks down protein and starch-based matter, which is exactly what a cloth nappy wash cycle needs to handle.
  • Sodium percarbonate (EWG 1) provides oxygen-based sanitising. PUL membrane safe. Kills 99% of germs naturally per Resparkle's product page.
  • No synthetic fragrance, no dyes.
  • Every ingredient EWG-rated 1 or 2: Sodium Carbonate (1), Sodium Percarbonate (1), Coconut Surfactant (1), Sodium Carboxymethyl Cellulose (1), Sodium Citrate (1), Natural Enzyme Blend (1), Sodium Metasilicate Pentahydrate (2).

Independently lab-tested to outperform CHOICE's #1-rated supermarket detergent on five common stains. The enzyme activity and oxygen bleach combination is one of the most effective natural formulas available for the biological load of nappy washing.

Concentrated dose (2-3 teaspoons) means less residue in fabric between washes. That matters for nappies that go through hundreds of cycles in their lifespan. Plastic-free industrially compostable bag. Made in Australia. Resparkle partners with Brunswick Industries (which employs people with disabilities) and Brite Industries.

Strip wash compatibility: Sodium percarbonate is the active ingredient in most strip wash protocols used by the cloth nappy community (Rockin' Green, similar). Resparkle's formula is strip wash compatible.

Also available: Complete Laundry Bundle ($89): includes the Universal Stain Remover, which is listed for cloth nappy use on its product page and works as a pre-treatment for heavily soiled nappies.

Where Resparkle doesn't win

Three honest gaps:

  1. Not explicitly positioned for cloth nappies. Resparkle is a household laundry powder, not a cloth-nappy-specific product. The formula meets the technical requirements, but the packaging does not call it out. B Clean Co BABY has that specific community positioning.
  2. Direct-to-consumer only. Not available at cloth nappy retailers or health food stores. Order at resparkle.com.au.
  3. The enzyme blend is a plant-derived blend. For the subset of nappy users who have read cloth nappy community guidance suggesting low-enzyme or enzyme-free detergents for certain nappy types, note: the mainstream cloth nappy washing guidance (Clean Cloth Nappies, Baby Beehinds) actually recommends enzyme-active detergents as the most effective for biological stain removal. The anti-enzyme concern applies more to natural-fibre nappies like wool covers, not to modern cloth nappies with PUL or synthetic inserts.

2. B Clean Co BABY: the cloth nappy community pick

Score: 7.8 / 10. Powder. 100% Australian-made, Adelaide. $22.95/unit. Plant-based, no SLS, no synthetic fragrance, no parabens, no phosphates, no optical brighteners. Endorsed by Baby Beehinds (one of Australia's primary cloth nappy retailers) and listed by Clean Cloth Nappies as a recommended detergent.

B Clean Co BABY is the right answer if you specifically want a product with strong cloth nappy community endorsement and baby-specific brand positioning. The community trust is genuine, the formulation is cloth-nappy-appropriate, and Australian-made production is confirmed.

Where it falls behind: higher per-unit cost than Resparkle (bulk pricing available from bcleanco.com.au reduces the gap), per-ingredient EWG table not published, septic safety not explicitly confirmed. No published independent lab test against a named performance benchmark.

3. ecostore Ultra Sensitive: the Sensitive Choice certified option

Score: 7.3 / 10. Powder. 1kg / $10.50. Fragrance-free, colorant-free. No optical brighteners. Sensitive Choice approved. Septic safe. Made in New Zealand. Available at Chemist Warehouse.

ecostore Ultra Sensitive is the right answer if you specifically need a fragrance-free powder with third-party sensitive-skin certification and you want it available from a mainstream retailer. The formulation avoids the obvious cloth nappy disqualifiers.

Where it falls behind: no per-ingredient EWG table, enzyme status is not confirmed on the product page, and the product is not specifically positioned or endorsed for cloth nappies. Recyclable carton, not compostable packaging.

4. Abode Zero: the health store option

Score: 6.8 / 10. Powder. 1kg / $19.50. Fragrance-free. No phosphates, no petrochemicals, no zeolites, no optical brighteners. Grey water safe. Does not list fabric softener agents or optical brighteners.

Abode Zero is the right answer if you need a fragrance-free powder from a health food store that you already trust and it is available to pick up today. It meets the optical brightener and softener-free requirements.

Where it falls behind for cloth nappies specifically: no enzyme listing on the product page (confirmed enzyme-free by some retailers), which reduces cleaning performance on biological matter over many wash cycles. No published cloth nappy community endorsement. Plastic packaging.

5. Earth Choice Standard: the supermarket entry point

Score: 6.0 / 10. Powder. Available at Woolworths. ~$0.20/wash. Plant-based formula. Enzyme-active. Often uses oxygen bleach.

Earth Choice standard powder is the right answer if you need something from the supermarket today and you specifically want an enzyme-active formula at the lowest price point. The enzyme activity makes it genuinely more effective on biological nappy loads than most of the natural alternatives.

Where it falls behind: uses plastic packaging, ingredient transparency is low, and the "sensitive" variant removes enzymes (making it less effective for heavy nappy loads). Not compostable. Not the transparency standard the other options in this ranking provide.

The strip wash question

Even with an excellent detergent and routine, most cloth nappies need a strip wash every few months to clear mineral and detergent build-up. Strip wash protocol: hot soak with sodium percarbonate (oxygen bleach), multiple hot rinses until water runs clear. Resparkle's formula (including sodium percarbonate as an active ingredient) is compatible with standard strip wash protocols. After a strip wash, return to your normal routine with correct dosing.

Signs you need a strip wash: nappies smell of ammonia shortly after a wet, repelling despite correct fit, skin reactions that started after many months of use.

Decision matrix

  • Strongest published ingredient stack, full cloth nappy technical requirements met, lab-tested cleaning: Resparkle Fragrance-Free Natural Laundry Powder.
  • Cloth nappy community endorsement and baby-specific positioning: B Clean Co BABY.
  • Need Sensitive Choice certification from a mainstream retailer: ecostore Ultra Sensitive.
  • Health food store purchase, fragrance-free: Abode Zero.
  • Supermarket, enzyme-active, lowest price: Earth Choice Standard (not the Sensitive variant).

Further reading

Sources

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