: Sites like Bulk Apothecary or The Chemistry Store are excellent for high-purity USP grade liquid. 2. Specialized Chemical Suppliers (Best for Bulk)

For DIY projects like soap making, skincare, or cigar humidors, online retailers offer the most convenience.

While rarer on standard store shelves, you can sometimes find PG locally:

You can purchase propylene glycol through three main channels, depending on how much you need and what you plan to do with it. 1. Online Marketplaces (Best for Small Quantities)

: Often stocked as a treatment for ketosis in livestock.

: Specializes in premixed solutions (20%–50%) for chillers and antifreeze. 3. Local Options (Emergency Needs)