After using the Hopes anti-dandruff shampoo and conditioner since we received them, I'm afraid to report that Geoff's dandruff is back and so I'll finish those products off and he'll have no choice but to go back to Head & Shoulders if we can't find something else that works. I had thought to get him the No Flakin' Way that Laura mentioned in one of her comments. Sainsbury's don't seem to carry it on their website, they list 29 Clairol Herbal Essences products but not No Flakin' Way and for sheer convenience, it would be handy if I could buy it with my weekly on-line shop but I'll pop into Boots next week when I'm in Cambridge and see if they have it.
Sainsbury's do carry Johnson & Johnson's Neutrogena T/Gel Anti-Dandruff Shampoo so I've written to J&J via their website asking whether it contains palm oil or palm oil derived products.
Whilst searching Sainsbury's site, I noticed that they now have an own brand of dishwasher tablets and in the absence (still) of a response from Reckitt Benckiser, at the same time as writing to them about the extraordinary use of palm oil in the silverside beef joint, I've asked Sainsbury's about that product as well.
As usual, responses will be posted here.