I have very oily skin, so when one of the therapists at the Placecol in my area told me that my skin was dehydrated I was reluctant to believe her. How could skin THIS oily lack any moisture?

Well, when your skin is dehydrated it makes even more oil to compensate... hence the much oilier skin!
I went to Placecol for a skin analyses and they recommended this product. It's a bit pricey, but remember you use only a very small amount of it on your skin.

The therapist recommended I use it morning and night, but I preferred using it only at night as it made me feel a little greasy when using it too much.
My skin started to feel less dehydrated (my oiliness was subsiding) and the texture of my skin was really smooth. I really do like this product, but I'm trying out some of their other stuff at the moment, and that's the only reason for not repurchasing :)