Do you think it's good to use these products together in the same routine?

I don't see why not since I cannot see incompatible actives.

one is your leave on SA serum and the other doesn't have any actives really. Just a moisturizer, so I don't see the problem as long as the moistuzer is comfortable. Have you tried the serum yet. Adhydrous version means water- free. tThe base is Squalane which I personally love but if your skin is oily and you don't like glowy look, I don't think you will like this SA version.

yes you can. the cream doesn’t have anything that would interact with the sa

you have to tell us what ingredients on thos products so we could give you a suggestion

yes