First off: all the su:m37 products are super well-formulated. They're pH-balanced to about 4.5 (weakly acidic, just like the skin), and generally contain few irritants or acne triggers. This toner is no exception.
It smells tangy and fruity, and slightly of ferment - nothing overpowering. The product comes in a gorgeous, heavy, frosted glass container and is very liquidy on application. And oh, how it applies.
When I first tried it I genuinely wondered if there was meat tenderizer or something similar in it. I know that sounds weird but it left my face feeling SO soft that I just couldn't believe it. It absorbs quickly, I love the smell AND that feeling of amazing-ness persists AFTER I apply the product - ie when I wash my face again. It's not some temporary thing. It's genuinely making my skin better!
I love this toner!!!!!