Regulates sleep-wake cycles and mood stability. Another theory is related to allergic people, who have higher rates of depression spring because pollen causes increased susceptibility and instability in moods. Other theories deal with social factors: people with satin youth cream low levels of quality of life, in spring are forced to be well, happy and radiant. This develops depressive symptoms. However there are no studies that prove these theories concretely. So this mood disorder is still little known, but all essential oils, to a lesser or greater degree, balance the nervous system, either due alteration to the change of season as we have seen, or is stress, exhaustion, stress, anxiety, depression for several .