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Fill Refills FAQs

Fill make everything themselves, in their family run factory in Northamptonshire. All Fill formulations are formulated, tested and developed by real chemists. We purchase their 20 litre post consumer recycled plastic drums, which we return to them when empty for them to be reused. 

All Fills formulations are:

  • Readily biodegradable  (the ability to naturally biodegrade when subjected to sunlight, water & microbial activity from 60-100% in 28days)
  • Vegan and cruelty free
  • Free from harsh chemicals
  • Contain no unnecessary dyes. pearlisers or other enhancements
  • They only include what you need for a good clean



What accreditation do Fill have?

They are undergoing assessment to become a B-Corp member, and seeking leaping bunny certification for all their products. Fill were the first certified plastic free laundry detergent in the UK. 

Are Fill products Vegan and cruelty free?

Yes, every product has vegan accreditation. They don't test on animals, and they source raw materials from suppliers that don't test on animals. They are applying for cruelty free certification. 

Where can I see a list of ingredients?

We have attached a link to Fills ingredients on every product page. Each bottle is also screen printed with its ingredients. 

Fill products are designed to conform to eco product regulations. 

Do Fill use Palm Oil?

Fill does not directly use palm oil. They ensure that where possible their raw materials are free from palm oil and its derivatives. 

What about SLS and SLES?

These surfactants are very similar. SLS is a skin irritant, whilst SLES is formulated to be milder on the skin. Fill do not use SLS in any of their products. They use SLES in the hand soap and wash up as a mild coconut based cleanser for removal of particular soils. 

Are they safe for septic tank?

Yes they are.



Can you tell me more about Fills Laundry Liquid?

Fill Laundry liquid is safe to sensitive skin. It's an eco plant based formula based on bio-surfactants. It doesn't contain any optical brighteners, dyes, enzymes, or harsh chemicals although it's best to stick to unscented if your sensitive. Fill laundry liquid is certified plastic free, and carries the vegan trademark. The unscented is allergy UK approved. 

How many loads of laundry does one 500ml detergent do?

Depending on your load size, around 25 washes.

How much do I need?

Fill recommend between 20-40mls on a light soiled load, and a maximum of 60ml for heavily soiled loads. 

What about Hand Wash?

Dilute 1-2 capfuls in a sink with warm water. Soak for 5 minutes and rinse in cold water. Always follow the garments guidelines. 

Are fill laundry products bio or non bio?

The laundry liquid is designed to be non-bio (enzyme free). Enzymes can require higher temperatures to be more effective, or that they need a longer period of time to work. Fill set out to create a liquid that's effective at lower temperatures for shorter cycles.

How do I wash cloth nappies?

Please see Fills guide here