Our Hair Rinse Concentrate returns your hair back to neutral pH after using our shampoo bars or liquids.

No need for conditioners, just rinse off the soap, apply the rinse and wash out.

Also includes essential oils to sweeten the scent further nourish the hair

Bottled in our recyclable aluminium bottle, purchase it with the beaker.

You need just 5mls of concentrate, fill the beaker with water and apply throughout the hair, and thoroughly rinse out

Then simply rub a small drop of Olive Oil or Argan Oil, or similar in between your hands and run them through mid to end lengths of hair.  Done!

Apple Cider Vinegar (Organic Pure)

Aqua (Rain Water)

Lavendula Angustifolia (Lavender Essential Oil)

Citrus sinensis (Orange Essential Oil)

Argania spinosa (Argan Oil)



All proper Soaps are made using Sodium Hydroxide or Potassium Hydroxide. This saponifies during the process with the oils and water and by the time your soap is a hard bar or finished liquid soap, the Sodium or Potassium Hydroxide has evaporated from the soap and has turned into bi products including glycerine.

Another name for the combination of Sodium or Potassium Hydroxide and Water is called Lye, or you will see it as "Saponified Oils".

A soap made without lye is made with either animal products like Tallow or a combination of detergents, surfactants and emollients from laboratory produced synthetics.  Technically, it does not therefore meet the definition of soap.

People are sometimes worried about Sodium and Potassium Hydroxide. In a properly made soap it is completely absent from the soap once you buy it. We are actually not required to disclose lye, or sodium hydroxide as an ingredient because it is no longer in the finished product, however Kahuku believes in full disclosure.

Sodium Hydroxide can actually be found in food, as it is used in curing processes, and also adds "crunch" to some products like Pretzels. 

Kahuku Products are free from animal products, detergents, and synthetically produced ingredients. 

Kahuku is committed to keeping our shipping costs as low as we can.

We are further committed to the environment, waste, and sustainability.  This means we will not use courier bags, plastic wrap or cushioning, tape or any other non biodegradable product. 

Our shipping costs are flat across all New Zealand. All products have their own dimensions and weight and your shopping cart is calculated as a total and the shipping amount calculated from that. This is based on NZ Post's volume/weight calculations. Please check your cart before you complete and pay for your purchase

As a guide, they are as follows:

Bars of Soap, Single 450ml bottles

Usually around 4 bars of soap, or 1 bottle

Flat Rate $6

Liquid Soap More than 1 Bottle or More than 5 Bars Soap

North Island Flat Rate $10

South Island Flat Rate $12.50

Please note that these rates are determined by the items in your shopping cart, and may differ to above.

No charge for returning the Zero.Refill bottles!

When ordering, we ask you to try to reduce the footprint created by shipping, and order multiple items.