Can I use Nykaa Wallet balance outside Nykaa with some other ecommerce sites? Nykaa Nykaa Wallet balance can't be used outside Nykaa. It can be used only on Nykaa site/app to purchase goods and services. Related articles Where would I receive refund if I placed order through Nykaa Wallet? Can balance in my Wallet expire? What is the Nykaa Wallet? Can I withdraw balance to my bank account from Nykaa Wallet? I placed order through Nykaa Wallet but didn't receive cashback as promised.