not sure on oils, but I noticed 2 new products in 7/11's recently that may interest you, lube in a spray can and chocolate condoms, I'm gunna try the choco condoms.
They hold a health and beauty exhibition in Bangkok each year, which I have attended in the past and there were plenty of Thai suppliers of the stuff your looking for.
Many supply to the spa industry and have there own outlets, my suggestion is to try some of the spa websites like chivasom and expand your search from there, they are out there and quite a few are based in BKK.
