If the hands become dry because of a justifiable excuse, like if he forgot or due to the heat, then one should make the hand wet with the wetness from the beard, eye lashes, eyebrows or any other areas of the face, and wipe using that wetness.
If there is indeed a barrier created by such a cream, it will be permissible to shake hands in the mentioned scenario, as long as it does not involve another prohibition, like causing desire or humiliation or the like.
If the substance naturally contains a very small percentage of alcohol in such a way that if consumed it does not cause intoxication, then it is permissible to consume.
If the contract was based on not considering the dower then it is void. If not mentioning the dower was due to oblivion, shyness or any similar reason then the marriage contract is correct and the husband must pay his wife a dower that is usually paid for a woman with similar characteristics and circumstances.
