I Tested Several Carrier Oils: Here’s What I Discovered About the Meaning of USP in Carrier Oils
When I first started exploring the world of natural skincare and aromatherapy, I kept coming across the term “USP” attached to various carrier oils. It piqued my curiosity—what exactly does USP mean in this context, and why does it matter when choosing a carrier oil? Understanding this little acronym can make a significant difference in…
