Our items are either Ready Stock or Preorder items. Our weekly promotion starts every Thursday 12pm(Vip preview at 10am) and ends at Sunday 11:59 pm! So, check out our menu under ‘New - This Week’s Spotlight' tab every Thursday!

• Ready Stock: If it is a ready stock item, there is no special mention in title and product intro. It will be delivered within 2-5 business days after order confirmation.
• Preorder Items: Product title starts with [PREORDER] and the intro starts with closing date of preorder and estimated arrival date. Delivery will take normally 4-6 weeks (Korean brand will produce and send to Singapore. In Singapore, we need to do trimming and quality check for every piece, so it normally takes 4-6 weeks.) For preorder items, you can check estimated arrival status in the menu PREORDER STATUS: Link 

Kindly click on the "NOTIFY WHEN AVAILABLE" button on the product page. You will receive an automatic email/SMS notice when the item is restocked. Another way is to follow our social media so that you can get the latest news about restocks, giveaways, and popups. Instagram account is @ksisters.sg and Facebook is facebook.com/ksisters.sg

You can check the shipping confirmation email from us. There is a shipment tracking URL which you can click to check the status of your package delivery.

Yes, we accept exchange or return items. Please see this page in details.

We offer free delivery service over S$60 orders (for Singapore orders).

$5 flat rate for orders below S$60.

We support 2-5 business days delivery for orders.

We will split the order into 2 shipments. Ready stock items will be dispatched as per our usual processing timeframe and preorder items will be sent out when all stocks in the same invoice have arrived. This only applies for local orders.

Yes, we do. Most countries are available! Read this page for more details.

• While we offer international shipping, not all products are eligible for international delivery due to shipping and country-specific restrictions.
• BNR17 Probiotics requires cold-chain delivery (except BNRThin Slim+), hence we only accept orders with a Singapore delivery address for these products.
• Flammable items are not eligible for international delivery due to shipping restrictions. This includes products such as perfumes, diffusers, room/fabric sprays, etc.
• For other products, international customers are advised to check with their local authorities on any applicable import prohibitions, restrictions, or requirements before placing an order.
• In the event of non-compliance with country-specific import requirements, customers will be responsible for any return shipping costs back to Ksisters. If customs authorities decide to dispose of or confiscate the products, no refund will be provided.

Self-collection/express shipping is subjected to availability. Please contact help@ksisters.sg at least 1 working day in advance of your collection to check for availability.  

Please contact help@ksisters.sg with your name and order number.

Yes, you can. Please make sure to write your name and order number in the return package.

If you've experienced an allergic reaction to one of our products, please get in touch with our Customer Service (CS) Teamat help@ksisters.sg

Your input will help us communicate to the brand involved and find an appropriate solution! In your message to our CS Team, please include:
- Your order number/ location of the Popup the item was purchased from;
- The full name of the product that caused an allergic reaction; and
- A detailed description of the symptoms experienced

Our CS Team may also ask for:
- A full view photo of the popup receipt (if applicable);
- Photos of the product; and
- Photos of the affected area

Since different skin types and conditions may react differently to a particular product, we always suggest reviewing the listed ingredients of products to help you identify any sensitivities with certain ingredients/ do a patch test before using any new product.

As the probiotics requires cold chain delivery service, returns & exchanges or cancellations is strictly NOT allowed. Please consider carefully before purchasing.

Please kindly note that if your orders consist of both PO and readystocks, they will only be delivered together when PO items arrive. If you would like to receive the readystock items first, please make a separate order.

Delivery time frame for readystock order is 5 - 10 working days. 

Once the delivery date has been scheduled, a WhatsApp delivery notification will be sent to you by our logistics partner Skylink at least 1 day before delivery.

Kindly follow the instructions in the message to leave any delivery instruction for the driver. E.g. contactless delivery, reschedule delivery date etc. Please note that all requests are subjected to our logistics partner's availability and confirmation. 

Delivery may be delayed and may take longer than usual due to a surge in orders during the festive/promo season.

Ksisters and our logistic/courier partners will not be held liable for any failed delivery due to the recipient’s negligence. There will be a S$15 surcharge for re-delivery (charges applied by our external partner).

Awesome! Please email us at help@ksisters.sg or message us. 

(Note: Replies after working hours and during weekend & public holidays will be slower. Rest assured we will get back to you soon!)