Castile soap is a vegetable based soap named after the Castile region in Spain where it was first produced. It is a versatile and cost-effective product and it is ‘real soap’ with all the cleansing properties of soap with nothing added.

Biorganics is a UK-based company that manufactures “ethically sourced, cruelty-free, natural and organic” products. Their Castile soap is made from saponified organic coconut and sunflower oils.

Product Information

Price: £6.50 (500g), £10 (1kg), £29.95 (5kg)

Retailer: Amazon

About BiOrganics Hair Therapy

“We create professional products that give salon results, using natural and organic ingredients wherever possible… Our vision is to continue to produce ethically sourced, cruelty-free, natural and organic hair products that work.” Read more on the official site here.


The Ergohacks Evaluation


Castile soap is incredibly versatile because it is just plain soap with no added surfactants, fragrance or colouring. It can be used as a body wash, liquid hand soap or shampoo and is a good choice for children and anyone with sensitive skin because it has a mild pH. Also an excellent cleaning product as a washing up liquid, delicate laundry detergent, floor soap, general purpose cleaner, cleaning spray or window cleaner.

It is highly concentrated. Use it straight out of the bottle with water or dilute it further.  Put it in a spray bottle with vinegar and water for an instant general purpose spray or window cleaner. Put it in a glass hand soap dispenser with a touch of oil and impress guests using the facilities with the smoothest, softest liquid soap. Add a few drops of cedar oil to make a masculine shower gel or shampoo or add a few drops of lavender or rose for a more feminine choice.

It is quite runny straight out of the bottle, which some may prefer and some not. Add some high quality salts to thicken it up to the desired consistency.

It does have quite a strong smell that is challenging to mask. Choose strong scented essential oils and add a generous amount. We use cinnamon and cedarwood or cinnamon, nutmeg and orange. Some oils, like lemon and eucalyptus doesn’t mix well and floats on top, if this happens with your oil, choose a different one, gently heat to blend or give it a quick shake before use.

Ergonomic Design

Biorganics bottle their Castile soap in plastic containers that are easy to grip. The screw tops are large and easy to turn without childproof safety caps.

Environment & People

Biorganics is a UK-based company that manufactures “ethically sourced, cruelty-free, natural and organic” products. Their Castile soap is made from saponified organic coconut and sunflower oils. It is environmentally friendly and vegan.

It is available in large quantities (5kg) which reduces the amount of plastic consumption. It is packaged in plastic bottles made out of HDPE (high density polyethylene) that carries a low risk of leaching and is widely recyclable.


Castille soap is a cost-effective choice and much cheaper than most skincare products on the market. A small quantity does go a very long way.

I would estimate from personal use that a 500g bottle lasts about 2 months in a small household and along side a handful of other ingredients (baking soda, vinegar, lemon, 10ml bottle of essential oil, a small bottle of base massage oil – jojoba, almond etc) can replace all household cleaning products, soaps and shampoos. You would be hardpressed to source even standard, budget non-organic alternatives for less than £5 per month for the whole family.



Water – 30 to 50%
Potassium Oleate (Derived from Organic Sunflower Oil) – 10 to 30%
Potassium Cocoate (Derived from Organic Coconut Oil) – 3 to 10%
Glycerin (Organic origin) – 3 to 10%
Potassium Citrate – 0.3 to 1%
Potassium Palm Kernelate – 0.1% or less
Palm Kernel Acid – 0.1% or less


Castile soap is one of those products that once tried, it is hard to imagine going back to use anything else.

It makes soft, silky liquid hand soap with a few drops of almond oil added, a mild detergent to handwash delicates, we think it’s a good children’s soap and shampoo because it is mild and contains nothing abrasive. It can free up a lot of space in bathroom and kitchen cabinets as one bottle does it all. It is a convenient product and can be used fragrance free straight out of the bottle or mixed with one or two other ingredients to make it more versatile.

Biorganics’s castile oil is ethically and sustainbly sourced, organic and vegan at a very good price. Highly recommended both as a skincare and cleaning product.

The review is based on the 500g Castile Soap from Biorganics. This post contains affiliate links. First published on 29 November 2015.