As mentioned in the last section, men's and women's skin have different needs. Each type also has different sensitivities. Men's skin is thicker and tends to be less sensitive to detergents and abrasives. If you're a guy, you'll give yourself a better chance of achieving and maintaining healthy skin by using soap made for a man rather than for a woman.
One more thing to keep in mind is that as men mature, they have a tendency to develop seborrheic eczema. One way to keep this condition at bay is by cleansing, exfoliating and moisturizing with the appropriate products, and what works for your wife or girlfriend's skin may not work so well for yours. It may take trial and error, or even professional help, to come up with the most suitable skin-care regimen.
See what exfoliating has to do with soap and skin care in the next section.