Male skin is not simply "mens skin" it can have many characteristics with differences from aging, pigmentation, sensitivity, acne and lifestyle.
One key factor is andogens of which the chief horomone is testosterone which contribute to male skin being thicker (increased collagen, elastin and hair follicles).
Testosterone increases sebum production by the sebaceous glands, a complex made up of cholesterol, free fatty acids, glycerides, squalene, and wax esters. Sebum provides protection from envinmental agents + prevents water loss however can contribute to adolsent acne.
From mid to late 20's testosterone levels decline and may contribute to hair and skin changes.
Environmental effects include daily UV exposure and shaving, these effects are more pronounced with fair skin.