In reply to SouthernSteve:
I had a brief rummage about, but can't find the thing I read now. (It's something I came across whilst looking for info during a DEET -vs- Smidge - vs - Avon SSS debate on here.)
Not sure now how authoritative it was (I vaguely remember thinking it seemed reasonably convincing at the time, but it could be that I just wanted to be convinced) - it claimed that Avon learned that SSS was being used by American soldiers as a midge repellent, added a fairly low percentage of DEET into one version of it to make it more effective and marketed it as a repellent. Then subsequently took it out again when they changed the formulation a few years later.
While looking for that, I've noticed that they do produce a 'bug-guard' Skin So Soft in the USA with 10% Picaridin. (Which would, I suppose, make it a bit like a sort of moisturising half-strength Smidge.)
https://www.avon.com/product/skin-so-soft-bug-guard-plus-picaridin-pump-spr...