Review (4/5): Helped formulate my lotion!
In the process of formulating a replacement for a fave lotion that isn't available anymore, the active ingredient wouldn't go into solution with anything I've used before. Then I discovered propylene glycol - it did what jojoba oil, water or glycerin couldn't. Yay!
And at 1% by volume it makes absorption of my chosen actives into the skin more efficient too. Yes! 6oz bottle doesn't hog room stored in the fridge either ;)