When and how should I ask a customer for a review?
Ask once, after the parcel has actually arrived and the customer has had a day or two with the product, and keep the request short, polite and easy to act on.

Timing is most of it
The right moment is after the product is in the customer's hands and they have had a chance to use it. Asking while the parcel is still in transit makes no sense, and asking the moment the courier marks it delivered can be too early, especially for something like a pickle jar, a skincare product or a garment they may want to wear first.
A sensible rule is to wait a day or two after delivery for light items, and a little longer for things that take time to judge, such as a plant, a handloom saree or a set of bed sheets that need a wash. You know your product. Ask yourself, how long before a customer can honestly say whether they like it.
Make sure the order went fine first
Do not send a review request blindly. If the order was delayed, if the customer complained earlier or if there was an exchange, handle that conversation first. A review request on top of an unresolved problem feels tone-deaf. Check your last message with that customer before you send anything.
Ask once, politely
One request is respectful. Two reminders start to feel like pressure. If a customer does not respond, let it go. They may be busy, they may not be the writing type, or they may be quietly happy. None of those is a problem.
Keep your tone warm and brief. Thank them for the order, say you hope they like it, and invite them to share how it went. Do not tell them what to write, and never hint at a star rating you would like.
Make it easy
The biggest reason people do not leave reviews is friction. If they have to hunt for the place, they will give up. On a Varchas store, customers can rate the items on their own order page once the order shows as delivered, so you can point them to that page rather than describe a series of steps. Link them straight to their order and the form is right there.
You can also ask them to reply in chat with a line or two, and with their permission, share it. Read how to use customer reviews on your Instagram for doing that honestly.
A message you can adapt
"Hi Anjali, this is Rekha from [Store]. Your order should have reached you by now, and I hope you are enjoying the candle. If you have a minute, I would love to hear how it turned out. You can rate it here: [order link]. And if anything is not right, just reply and I will sort it out. Thank you for supporting a small business."
Notice the last part. It opens the door for problems to come to you privately first, which gives you a chance to fix things.
What not to do
- Do not offer money or gifts for good ratings. That pushes people to be dishonest, and it may break the rules of the platform where the review appears. Check current rules for your situation.
- Do not ask only your happiest customers and skip the rest. Ask everyone in the same way.
- Do not argue with a lukewarm review. Thank them and, if needed, follow up as described in how to reply to a negative review professionally.
- Do not ask in a group message. Each request should be personal.
Build it into your routine
Add a column to your order sheet called "review asked" and tick it when you send the message. This stops you from asking twice and helps you spot customers you have not yet asked. If you handle ten orders a week, the whole job takes a few minutes.
Over time, honest reviews will pile up on their own. You do not need a trick. You need a polite ask at the right moment, every time, for every customer. See customer reviews on your own store for how they appear to shoppers.