well, *k.a.t.e* --- you've got dry/normal skin and you live in the UK, right? it's quite humid there, especially coming into summer, yes?
avocado eye cream is lovely and really hydrating and feels nice, but it's quite thick and it's really only good for hydration. it has no collagen-stimulating or anti-aging properties, except that the avocado oil strengthens the lipid barrier on the skin.
for your face -- is your skin fair, tan, freckly? do you have large pores, nearly invisible pores? does your skin react to certain ingredients? do you have food allergies? and what is the effect that you're looking for? are you just looking for a good moisturizer to keep the skin balanced and hydrated - or are you looking for anti-aging ingredients? how old are you?
lol. sorry for all the questions, but Kiehl's has a million products and they're all pretty specific to your particular skin type and concern. and i'm not familiar with all of them, but certainly familiar with the ingredients and could make a recommendation for you.
the other thing is that they do "skin barrier tests" there to measure the amount of oils on your skin and then do a consultation to figure out which products would be best for you. i have a friend who used to work for kiehl's (which is how i know so much .. and also why i got to try so many things without paying for them. lol) and i know that she went through a fairly extensive training program before ever being able to actually recommend products to the customers. they know what they're talking about in there, i think.