Riot Points may be used to:

Purchase champions.

Purchase champion skins.

Purchase chromas.

Purchase bundles.

Purchase Hextech Crafting materials.

Purchase emotes.

Purchase ward skins.

Purchase summoner icons.

Purchase experience boosts.

Purchase additional rune pages.

Change your summoner name.

Transfer your account to another server.

Notes: 

This product is non-returnable and non-refundable.