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Your item must be unused and in the same condition that you received it. It must also be in the original packaging. 

We do not provide refunds on liquids and powders. 

Any change of mind on a purchase, purchased the wrong product or any other scenario, we will provide a store credit only and postage costs are the buyers expense. 

We do not issue refunds for changes of mind or if there are unpaid or additional postage costs that need to be paid (If the customer has underpaid postage).

All liquids and powders sold by NSI NZ Ltd will not be refunded once they have left our premises. All sales are final and no refunds will be provided. 

Please do not send your purchase back to the manufacturer.

This is a professional use only product. We endeavour to make enough checks possible to ensure we sell to professionals. If this is the case, then a refund of product will NOT be honoured. 

Any item that is damaged for reasons not due to our error, will be an issue with the courier and a claim will need to be made with them. Bottled liquids and powders with no seal are not returnable due to the product being contaminated or used before returning to us.

Our systems are designed to work with what is in that system. Mixing other brands can cause undesirable results and we can not guarantee our product will work with others. We will not refund if this has happened.

If we are put into lockdown by the government, all orders will be shipped the first day we are legally allowed to work. We will not refund orders due to change of mind due to the length of time we are made to close.

Any item that are returned, these are the following procedures:

Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again.
Then contact your credit card company, it may take some time before your refund is officially posted.
Next contact your bank. There is often some processing time before a refund is posted.
If you’ve done all of this and you still have not received your refund yet, please contact us at

Any faulty goods will be assessed, once we are satisfied that the product is faulty, we will then offer a store credit or replacement, at our discretion. As most of our products are consumables, contamination is a major factor in causing undesirable results on certain products. Also, if the product has been used extensively, then we will not honour a credit or replacement. All complaints need to be made aware of within 30 days, barring Electrical goods which have a manufacturers warranty of one year and on the proviso that it has not been tampered with. Do not try to repair anything yourself, irrespective of if you are qualified to do so. Any faulty product needs to be returned to us first for assessment. If an item has been tampered or altered from the original condition, it automatically voids any warranty on that item.

Exchanges (if applicable)
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at and send your item to: PO Box 79017, Avonhead 8446, Christchurch.

To return your product, you should mail your product to: PO Box 79017, Avonhead 8446, Christchurch.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund. Items need to be packaged well to avoid damage back to us. We ask for a photo before you send the item to ensure the item is in a resalable condition. If this is not the case a partial or refusal of a refund will be actioned.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

If you are shipping an item, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.

Any items that have had the manufacturers packaging removed or items that have shown evidence of being tampered with, will void their warranty with the manufacturer and also will result in refusal of a refund. This will result if necessary, an additional charge by NSI NZ Ltd to repair the items and/or send them away.

Education courses

We do not refund Deposits on courses under any circumstances.

We will revoke all education training and certification if a student enters bankruptcy or any default. If payment if made (In full) we will then issue any outstanding work needed to complete a respective course.

Education courses will not be refunded once the course has started.

As stipulated in our education contracts, cancellation fees will be charged irrespective of circumstance. We invest a lot of time and money before a course commences and all costs incurred will be charged to the student that cancels. We do however offer to move dates at our discretion but we will still enforce the cancellation fee, if the course is cancelled again even if it is before the cancellation fee comes into effect for the next available course, you will still be charged as it was moved to accommodate you, costs have already been incurred by NSI NZ Ltd and will be on charged to the student, no exceptions.

Course dates can change due to circumstances out of our control. Please ensure you check the dates on the calendar on the website to ensure your dates are correct before booking. We will not provide a refund if this happens.