Fragrance Formulation Development

Because I bought a ready-made perfume, Lost in Forest scent, but I still don't understand how to use perfume. Therefore, I would like to ask the following questions:

This finished perfume Can be used immediately or must be mixed with other things before use, such as shower cream and body injections

hello

Applying directly to the skin must be diluted By mixing it with Ethyl Alcohol (99.9%, 200 Proof, Perfumer Grade) in a ratio of 50:50 or more ( Ethyl Alcohol more).