Stem Organics exfoliant
Enzyme exfoliators, based on pineapple for example, dissolve skin cells rather than slough them off. I have been using Tracie Martyn's enzyme exfoliant for years, but I've never really been in love with it. So I've had my antenna out for an alternative. With Stem Organics, I may have found it.
Stem's exfoliant does scrub (rather than dissolve), using bamboo extract, but does so with extreme gentleness. This product also contains Stem's two signature ingredients: pomegranate (an anti-oxidant with a clinical pedigree to prove it) and kakadu plum (an obscure Australian fruit that has more vitamin C than a gazillion oranges).
Incidentally, the preservative used is called sodium hydroxymethylglycinate. As far as I can tell, this has been tested and found to be non-irritating, non-toxic and non-sensitizing. I did find one anecdotal - but unsubstantiated - reference to it being irritating to the eyes.