hexylene glycol questions

Okay, so I know hexylene glycol is a fixative used in the perfumer industry, but will it inhibit diffusion too much if I use it in my mixes?

If hexylene glycol does inhibit diffusion too much, can perfumer’s alcohol (200 proof, isopropyl myristate, isopropyl alcohol) be used to dilute 200 proof alcohol containing hexylene glycol without a problem?

Diane