Question: Can we use oils from the grocery store in our creations?

Madeaj asks in this post: I have a question about oils. I see oils in the supermarket. My local has sesame (not toasted;-), macadamia nut, sunflower (storebrand for frying), walnut, grapeseed, coconut oil and of course olive oil. Are these the same oil used in cosmetic products or is there a difference? I usually cook with olive…