Conventional laundry detergents get clothes clean, but they often leave behind synthetic fragrances, optical brighteners, and chemical residues that irritate sensitive skin and wash into waterways. The best natural laundry detergent uses plant-derived surfactants and essential oils to deliver genuine cleaning power without those tradeoffs. This guide reviews the top-performing natural formulas, explains what “natural” actually means on a detergent label, and helps you pick one that matches your washing habits and budget.
What Makes a Detergent “Natural”
There is no legal definition of “natural” for cleaning products, which means manufacturers can use the term loosely. Look beyond the front label and check for these markers of a genuinely plant-based formula:
- Plant-derived surfactants — The cleaning agents should come from coconut, corn, or other plant oils rather than petroleum-based compounds like sodium lauryl sulfate.
- No synthetic fragrances — Scent should come from essential oils or the product should be fragrance-free. “Fragrance” as a single ingredient on the label can represent dozens of undisclosed synthetic chemicals.
- No optical brighteners — These UV-reactive chemicals make clothes appear whiter under certain light but remain on fabric and can irritate skin. Truly natural detergents skip them.
- Third-party certifications — EPA Safer Choice, USDA BioPreferred, EWG Verified, and Leaping Bunny (cruelty-free) are reliable indicators that the formula meets specific safety and environmental standards.
Top Natural Laundry Detergent Picks
- Seventh Generation Free and Clear — Best overall. Plant-based formula with no dyes, fragrances, or optical brighteners. EPA Safer Choice certified. Handles everyday soil well. Around $12-$15 for 90 oz (66 loads). Works in standard and HE machines.
- ECOS Hypoallergenic — Best value. Plant-derived, pH-balanced, and built-in fabric softener. Made in a carbon-neutral, water-neutral facility. Roughly $10-$13 for 100 oz (100 loads), making it one of the cheapest per-load natural options.
- Molly’s Suds Original — Best for sensitive skin. Only five ingredients: sodium carbonate, sodium bicarbonate, magnesium sulfate, coconut-oil-based surfactant, and peppermint essential oil. No fillers or preservatives. About $15-$18 for a 120-load powder tub.
- Dropps Stain and Odor Pods — Best pods. Pre-measured dissolvable pods with a plant-based enzyme formula that targets protein and starch stains. Compostable outer film. Roughly $25 for 64 pods. B Corp certified.
- Branch Basics Concentrate — Most versatile. A single plant-based concentrate diluted for laundry, all-purpose cleaning, and hand soap. Fragrance-free and EWG Verified. The starter kit costs about $50 and yields approximately 60 laundry loads plus other cleaning solutions.
Do Natural Detergents Actually Clean Well?
The honest answer is that natural detergents clean everyday laundry, body soil, light food stains, and general grime, perfectly well. Consumer Reports testing has shown that top-rated natural detergents perform within 10-15% of mainstream chemical formulas on standardized stain tests. For the typical load of t-shirts, towels, and bed sheets, you will not notice a difference.
Where natural detergents can fall short is on heavily soiled work clothes, grease stains, and set-in stains. For these, pre-treating with a plant-based stain stick or spray, like the Seventh Generation Stain Remover or a paste of washing soda and water, closes the gap. Enzyme-based natural formulas like Dropps and Puracy outperform non-enzyme natural detergents on protein stains like blood, grass, and food because the enzymes break down the stain molecules directly.
Liquid, Powder, or Pods
Each format has tradeoffs:
- Liquid — Dissolves well in cold water, easy to pre-treat stains by applying directly. Heaviest to ship and store, often comes in plastic jugs. Most brands offer liquid as their primary format.
- Powder — Lighter, often comes in recyclable cardboard packaging, and tends to be cheaper per load. Can leave residue in cold-water washes if not fully dissolved. Best for warm and hot water cycles.
- Pods — Pre-measured for convenience, no mess, and minimal waste. More expensive per load, typically $0.30-$0.50 versus $0.15-$0.25 for liquid or powder. Keep away from children, as their candy-like appearance poses an ingestion risk.
- Sheets — Ultra-lightweight, zero-liquid format that dissolves in the wash. Brands like Earth Breeze offer sheets at roughly $0.20 per load in compostable packaging. Performance is adequate for light to moderate soil.
Cold Water Performance
Washing in cold water saves roughly $60-$100 per year in energy costs for the average household and is gentler on fabrics. Natural detergents historically struggled with cold water because plant-based surfactants dissolve more slowly at lower temperatures. Modern formulas have largely solved this problem. Seventh Generation, ECOS, and Dropps all perform well at cold settings. If you use a powder formula in cold water, dissolve it in a cup of warm water first before adding it to the machine to ensure it fully activates.
Environmental Impact Beyond the Formula
A truly eco-friendly detergent goes beyond ingredients. Packaging matters: look for post-consumer recycled plastic bottles, recyclable cardboard, or compostable pod films. Concentrated formulas reduce shipping weight and carbon emissions. Brands like ECOS manufacture with 100% renewable energy and maintain carbon-neutral operations. Dropps ships directly to your door in compostable packaging, eliminating retail shipping layers.
Phosphates, once common in detergents, are now banned in most states because they cause algal blooms in waterways. All reputable natural detergents are phosphate-free. Biodegradability is another key factor: plant-based surfactants break down in water treatment systems within days, while petroleum-based chemicals can persist for weeks or longer.
Cost Per Load Comparison
Natural detergents cost slightly more than conventional options, but the gap has narrowed significantly:
- Tide Original liquid: approximately $0.18 per load
- Seventh Generation Free and Clear: approximately $0.20 per load
- ECOS Hypoallergenic: approximately $0.12 per load
- Molly’s Suds powder: approximately $0.14 per load
- Dropps pods: approximately $0.39 per load
- Branch Basics concentrate: approximately $0.35 per load (laundry only)
ECOS and Molly’s Suds are actually cheaper per load than most mainstream detergents. The premium options like Dropps and Branch Basics justify their higher per-load cost through superior packaging sustainability and multi-use versatility. Buying in bulk and subscribing for auto-delivery typically saves an additional 10-20% with most brands.
