This unfragranced non-bio laundry powder is a simple but powerful choice for everyday washing. Made without enzymes, optical brighteners, or perfumes, it offers an effective clean while keeping things gentle on skin and fabrics. Its oxygen-based cleaning system helps lift stains and brighten whites without the need for harsh chemicals or synthetic additives.
This product has been recognised as an Ethical Consumer Best Buy for its strong environmental credentials, highlighted for its refill-friendly supply chain, a minimal ingredient list, and a clear commitment to reducing packaging waste. Every refill helps cut single-use plastic, supporting a more sustainable and low-waste approach to household cleaning.
Ideal for both machine and hand washing, this powder performs well at low temperatures and in all water types. It is especially suitable for those with sensitive skin or anyone who prefers a fragrance-free laundry routine.
All SESI products are vegan, cruelty-free, and biodegradable, and their formulas are designed to truly clean while causing minimal environmental harm. The detergents are manufactured in the UK by an independent family firm.
Usage Directions
Pour the powder directly into the machine dispenser or a washball. Always follow the care instructions on the garment label.
Use the dosage guidelines as follows:
Low to normal soiling: 3.5 g to 6 g (approximately 3 ml to 5 ml) per kg of washing. In areas with very hard water, or for heavily soiled laundry, the dose may be doubled.
One heaped tablespoon is about 36 g. If carrying out a pre-wash, use one third of the total amount for the pre-wash and two thirds for the main wash.
Dietary and Lifestyle
Vegan, Cruelty-free.
Origin
Ingredients from multiple countries, and wherever possible, fragrances sourced locally (UK or Europe) to reduce carbon footprint. Manufactured at SESI's factory in Oxford, UK.
Storage
Store in a cool, dry place between 5 and 40°C, away from direct sunlight and heat sources. Keep out of reach of children and pets, and always ensure containers are tightly closed after use to prevent moisture from affecting the powder. Shelf life is 24 months from the production date if stored as recommended.
Safety Information
This laundry powder is designed for everyday household use, but please take care when handling. Avoid contact with eyes and skin, as it may cause irritation. Wash hands thoroughly after use and avoid breathing in the powder. If the product comes into contact with skin, rinse with plenty of water. If irritation occurs, remove any contaminated clothing and seek medical advice if symptoms persist. If the product comes into contact with eyes, rinse cautiously with clean water for several minutes. Remove contact lenses if present and easy to do, and continue rinsing. Seek medical attention if irritation continues. For extra care, we recommend using protective gloves or eye protection when handling larger quantities.
Packaging
We pack our refills in 100% recyclable paper bags for you to decant into your favourite storage container at home. The bags can either be reused or recycled in kerbside recycling to help you reduce hard-to-deal-with waste. This provides a sustainable alternative to plastic packaging while still offering the convenience of online shopping and helping you live a more sustainable and low-waste lifestyle.
Size
100g.
Disclaimer
Please note: The cost of refill items includes a surcharge of 10p per 100g. This covers the expenses of packing these items as well as providing collection and delivery services, while making them feasible for an independent business. Refill items are packed in an environment where we take great care to minimise the risk of cross-contamination of allergens. However, we cannot guarantee that products will be provided completely free from allergens.
We strive to provide accurate ingredient and allergen information on this website. However, please note that this information may change by our suppliers or the manufacturers without notice.
If you need specific advice regarding any product, feel free to contact us online or visit us in the shop.
SESI Unfragranced Non-Bio Washing Powder Refill - Vegan, Cruelty-free (100g)
In stock
SESI Refills is a UK-based social enterprise founded in Oxfordshire, which supplies sustainable detergents, toiletries and household cleaning products. Originally known as the School Ethical Supplies Initiative, SESI was started in 2006 in a shed at a local primary school.
Their products do not contain harsh or harmful ingredients, including chlorine bleaches, formaldehyde, phosphates, parabens, phthalates, optical brighteners, and other damaging chemicals. Their products are also safe for septic tanks and normal wastewater systems. They are an Ethical Consumer Best Buy with an ethiscore of 95 out of 100.
♻️ Closed Loop supply chain ♻️
SESI employs a closed-loop refill system, meaning that barrels and tubs used for distribution are returned, cleaned, and refilled. This process ensures that there is zero packaging waste from the factory to the consumer. Every time we order SESI products, they are sent to us directly from their factory using their own vehicles, resulting in a greatly reduced carbon footprint. With each delivery, we receive filled bulk bottles (that you fill your own bottles from to take home), which means your refills are truly zero waste!
In addition to cleaning detergents and household products, SESI also supplies food items and olive oil through a refillable supply chain. For example, they partner in a closed-loop supply of Extra Virgin Olive Oil, utilising bulk 20 litre tubs. These broader product offerings increase the impact of refill shopping by enabling more types of goods to be supplied to us through a circular supply chain and helping customers reduce plastic waste across more categories.
Through their refill model, SESI helps customers reduce plastic waste: they have reused or refilled over 5 million pieces of packaging to date.
<5% Non-Ionic Surfactants, Anionic Surfactants, Phosphonate, Preservatives: Benzisothiazolinone, Phenoxyethanol.
Ingredient What is it? What does it do? Salt (Sodium Chloride) A common mineral. Acts as a water softener, helps prevent limescale and can aid in stain removal. Soda Ash (Sodium Carbonate) An alkaline mineral salt. Raises PH, softens water and improves detergent effectiveness in removing grease and stains. Sodium Percarbonate A solid form of hydrogen peroxide bonded with soda ash. Releases oxygen when dissolved, acting as a bleach and stain remover - brightens fabrics. Sodium Metasilicate A silicate salt with strong alkaline properties. Helps break down soils, degreases surfaces, and protects metal surfaces from corrosion. SDBS 80 (Nansa) (Sodium Dodecylbenzene Sulfonate) An anionic surfactant. Reduces surface tension, allowing water to better penetrate fabric and lift dirt and oil. TAED (Tetraacetylethylenediamine) An activator for percarbonate based bleaching systems. Boosts bleaching performance at lower temperatures by activating sodium percarbonate. pH: 9.5-10
Allergy Information
This product does not contain added fragrance. However, please check the ingredient list if you have sensitivities to other ingredients.






















