Olan'vora was a Varro biochemical reaction. During and after mating, the epidermal skin luminesced. Psychological bonding increased with exposure, stimulating the areas of the brain responsible for love. If allowed to advance, the olan'vora became permanent and the couple became biochemically linked. Separation thereafter was rare, however, up until this point the effects would diminish in a matter of months with decreased exposure. Withdrawal symptoms could be unpleasant.