Switching to an eco-friendly laundry detergent doesn’t have to mean sacrificing cleaning power — but with so many green brands on the market, it can be hard to know which ones genuinely deliver. That’s where we come in.
We’ve tested and evaluated the best eco laundry options available in the UK, using our strict in-house scoring framework. From refillable liquids to plastic-free capsules, these five standouts offer real performance — without the harsh chemicals, overpackaged bottles, or greenwashing.
There’s not much separating the top performers on stain removal, so it often comes down to price, packaging, or sustainability priorities. Whether you’re going zero waste or just want something kinder on skin and planet, one of these will suit.
#5- Greenscents Laundry Liquid
- ✨ Cleaning Power: 3.8– Performs well for lightly soiled laundry
- 🫧 User Experience: Strong essential oil scents; good results at low temperatures
- ⭐ Customer Feedback: Rated 4.2 ⭐ from 25+ reviews, niche company less reviews.
- ♻️ Eco Rating: 4.1 / 5
- 💷 Cost: £8.25 (500ml) 🛢️ Refill available in 5L and 10L
- ★ Overall Rating: ⭐⭐⭐⭐ (4.0 / 5)
#4 – Fill Laundry Liquid
- ✨ Cleaning Power: 4.2 – Easy use; bottle or pouch, great everyday results
- 🫧 User Experience: Fragrance-free, smooth texture, no residue.
- ⭐ Customer Feedback: Rated 4.4 ⭐ from 300+ reviews
- ♻️ Eco Rating: 5 / 5 – Outstanding packaging, refill ability, and brand ethics
- 💷 Cost: £7.49 (500ml) 🛢️ Refill available in 5L and 10L
- Overall Rating: ⭐⭐⭐⭐ 4.3 / 5
#3 – Bio-D Laundry Liquid (Non-Bio)
- ✨ Cleaning Power: 4.3 – Effective at low temperature washes
- 🫧 User Experience: Unscented or Lavender options, works well for sensitive users.
- ⭐ Customer Feedback: Rated 4.5⭐ across 1200 verified reviews.
- ♻️ Eco Rating: 4.6 / 5 – Great credentials, ethical sourcing, and recyclable
- 💷 Cost: £6.12 (1L) 🛢️ Refill available in 5L and 20L
- Overall Rating: ⭐⭐⭐⭐✰ 4.4 / 5
#2 – Smol Laundry Capsules
- ✨ Cleaning Power: 4.2 – Capsule cleaning high quality, great for storage.
- 🫧 User Experience: Easy-to-use pods, mess-free, compact packaging
- ⭐ Customer Feedback: Rated 4.8⭐ from 27000+ reviews.
- ♻️ Eco Rating: 4.2 / 5 – Excellent low-waste packaging and cruelty-free
- 💷 Cost: £6.00 (24 Capsules) 🚫 Not refillable – Comes in recyclable cardboard
- Overall Rating: ⭐⭐⭐⭐ 4.4 / 5
#1 – Miniml Laundry Liquid
- ✨ Cleaning Power: 4.3 – Handles everyday laundry well, fully zero waste system.
- 🫧 User Experience: Light natural scent, great for skin, easy pour.
- ⭐ Customer Feedback: Rated 4.6 ⭐from 500+ reviews.
- ♻️ Eco Rating: 5 / 5 – UK-made, closed-loop refills, strong transparency
- 💷 Cost: £6.50 (1L) 🛢️ Refill available in 5L and 20L
- Overall Rating: ⭐⭐⭐⭐✰ 4.5 / 5
Verdict
This year’s eco rankings were closer than ever, but Miniml edges into first place with its high performance, closed-loop refill model, and top-tier transparency. Bio-D and Fill follow close behind, both offering excellent eco credentials and proven cleaning results.
Importantly, Bio-D and Smol are the only two products here that also feature in our Top 10 Laundry Detergents (UK 2025) — meaning they don’t just talk eco, they genuinely compete with the best in class.
🛢️ Refillability was a key differentiator: all top 3 brands offer practical refill routes, giving them the edge in Eco Ratings. With most cleaning scores separated by less than 0.3 points, your final choice may come down to packaging format, fragrance, or skin-friendliness.
FAQs
Q: What counts as an “eco detergent” for this list?
Only products with a 3.8+ Eco Rating — based on ingredients, packaging, certifications, transparency, and brand accountability — were eligible. Marketing claims alone don’t count.
Q: What makes a detergent suitable for everyday use?
It must handle standard household loads — including mixed fabrics, moderate stains, and 30°C washes — without needing extra boosters or special routines.
Q: Why aren’t cost or format part of the score?
We show cost for transparency, but it’s not factored into the overall rating. The same applies to format (e.g. capsule vs liquid). Performance and sustainability come first.
Q: Are any of these refillable or zero-waste?
Yes — Miniml, Bio-D, and Fill all offer refill or bulk-buy systems, and Smol uses plastic-free packaging. Look for the refill symbol next to each product.
Disclaimer:
All reviews are based on independent testing, verified user feedback, and available UK pricing at the time of writing. Product performance may vary depending on washing machine, water hardness, and load type.
Consumers Lens 