I'm looking for a reliable resource (preferably a manufacturer) that provides the safe max usage rate for essential oils, primarily when used in lip products. Emphasis on
safe, since BB's fragrance calculator can help when you're figuring out how much to use for scent strength, but not for safety.
To clarify a little: last month, I spoke to BB asking how to find the safe usage rate for EOs in lip balm. I was told to use the fragrance calculator, look up lotion and use the low recommendation. This made sense, but when I made test batches with about 10 different oils, most of them had no detectable fragrance. I called back and Tina re-advised me that I could use up to 2.5 ml per 4 oz on most oils---almost 5x what the fragrance calculator recommended. So, while I LOVE BB customer service, I just wanted to point out that they don't have a consistent, reliable source for lip safe EO usage rates. Liability and my customer's experience are both very important to me, so I don't want to take any chances.
I've been looking at WSP, my back-up vendor for EOs, and they do have the usage rates. But plenty of them don't make sense. Like the recommended rate of 17% for grapefruit EO in lip products.
http://www.wholesalesuppliesplus.com/Pr ... 5+Pure+706As you probably all know, grapefruit is a photosynthesizing oil and not safe for lips... so now I can't really trust WSP either.
I'm hoping that the soapers here might have another reliable resource that I can look to for this? I just want to find the lip-safe usage rates, maybe even information like acidity or pH so I can get a feel for the chemical properties of various oils and what makes them safe/not safe. Not looking for the answer for a specific batch right now, I'm just forming a database for my own reference.
Thank you all! And sorry for the ramble... this is how my posts usually go