Andrew as a candidate for the god of Eros had to focus on sex and eroticism, but that did not apply to his wives. For some time now, Andrew had noticed that he would need large amounts of money to accomplish his goals and since the system provided him with some skills somewhat distant from his affinity such as beauty product recipes and clothing designs, he had thought he could open an alternative business.
Certainly, he had already begun to exploit these skills, but he was always limited, as he could only produce a limited amount of these items and could not teach them in their entirety either, but with Carolina's ability this was no longer the case.
Since this ability was born of his divinity, although not 100%, Carolina should be able to better grasp the process of making these items from observing Andrew and that would increase his production.