The ultimate product for a truly beautiful dark dark tan xen tan have pioneered the use of precious argan oil in this formulation the concentrated liquid lotion is even easier to apply and provides a silky moisturising feel if you thought our dark lotion range was dark you ll be seriously surprised with moroccan tan an innovative liquid lotion with premium argan oil combined with xen tan s trusted tanning formulation this silky and lightweight weekly self tan glides easily onto the skin