For direct use, 30% oil concentration is good.

But it would be better to let the oil rest for two weeks in a cold dark place, then u can mix them according to the below: (noting that our recipe includes using perfume oil and perfumery alcohol (you may check for another way over the internet).

The recommended perfume oil percentage for all grades is 30% or you may use the following:

For designer and niche: 25%-35% (the rest is perfumery alcohol)

For A+: 20%-30%  (the rest is perfumery alcohol)

For A++: 15-25% (the rest is perfumery alcohol)

maturity time after mixing is from 3-5 days

Recommended perfumery alcohol is the one with a 96% of concentration (96% proof)