# Tokens exchange in DeFi
When working with decentralized finance, it is often necessary to perform the operation of exchanging one token for another. If you are faced such a task, we recommend using one of the decentralized exchanges (DEX). In this manual, we will exchange tokens using the DEX 1inch aggregator as an example.
1. Go to [app.1inch.io](https://app.1inch.io/) and connect your wallet to the service in the Polygon network;
2. Choose a token you are going to sell;
3. Enter the amount to exchange;
4. Choose a token you are going to buy;
5. Make a transaction to grant 1inch access to your tokens, wait for the completion of the transaction
;
6. Click the Swap button, you will see the Swap confirmation window. Carefully check the transaction parameters and confirm the exchange by clicking the Confirm Swap button;
Make a transaction and wait for the completion of the transaction 
. After the transaction is completed, new tokens will appear on your wallet.
**Done!**
Please note that sometimes Metamask has a delay when automatically displaying new tokens, if after 20 minutes the funds are still not displayed in Metamask automatically, you can add them [manually](https://www.youtube.com/watch?v=oBoh2WB7ua4), as well as check their availability in blockchain explorers [bscscan](https://bscscan.com/) and [polygonscan](https://polygonscan.com/).
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