Wow this was a great find for me. According to http://www.harnn.com/NaturalRiceBranOilSoapsCollection/NaturalRiceBranOilSoapsCollection.html, their soaps are made from Rice Bran Oil.
The clove soap, in particular, has provided me with immediate relief during flare ups.
Available from Tangs Department Stores in Vivocity and CK Tang Orchard Road.
Have been trying to buy new clove soap but Tangs (both at Vivocity and Orchard) seem to have no stock for a while now.
Still waiting for the new stock to arrive but one of the sales person mentioned that in general if the stock does not arrive for so long, they may discontinue it :(. Bought the Cinnamon soap as an alternative, will try it next