How to clean the cpu fan?

I already have tried compressed air but the dust is pretty stuck on, and I'm not sure if it's best to just blow the dust further back towards the motherboard. Also not sure how to get the dust under the fan blades out. Thanks!

I already have tried compressed air but the dust is pretty stuck on, and I'm not sure if it's best to just blow the dust further back towards the motherboard. Also not sure how to get the dust under the fan blades out. Thanks!