My mother loves those products (she's in her 60s). The basic kit has 4 products. The deep cleansing oil, the mild soap, a mild toner and the olive virgin oil. They're wonderful for her skin. You can get that whole kit for $68 (with no extra S&H charges).
I have combination skin so I'm a little bit scared of trying that 4 piece kit as I tend to break out on my oily areas. But I love that olive virgin oil. I still have some left and I'm running out and I have to (I must!!) buy it. I use a tiny tiny drop on my dry areas on top of my regular treatment lotions (around my eyes, around my mouth and between my eye brows). I also like the mild soap but I don't use it every day like the olive virgin oil.
You can ask for 4 free samples of that kit and see if it's suitable for you. The deep cleansing oil even gets rid of waterproof mascara and it washes off without any residue. I've seen my mother washing her face with it. It reminds me of Philosophy's Purity in terms of the way it cleans, but I think your face looks more radiant after using dhc's deep cleansing oil.
As for other products for dry skin I like the treatment lotions of Dr. Perricone, but they are somewhat expensive. I think the DHC kit is more affordable and it gives the same results as the basic olive oil kit from Dr. Perricone's.