Do you mean how long after you’ve bought it? There’s only a deadline to submit a review if it’s for a tester item 
You can review any product on the shopping site if you can get to the product page. One product I bought was discontinued on the US site, but I saw it was still live on other country shopping sites, so I still submitted my review of it on the out of stock product page. Even if you bought the product from a competitor, you can leave your review of the item on the Lovehoney product page 
4 Likes