Is it permissible for a Muslim to apply oil or creams to their hair for the purpose of setting, moisturizing, or appearance, and is it permissible to apply them to the hand for the same purposes?

Applying oil and cream to the hair is permissible and even encouraged, as it falls under honoring and caring for the hair, which is something the Sharia has recommended. There is no objection to applying them to the hand for the same purposes, as long as it does not exceed the bounds of moderation.