MRI captured when a mother kisses her two-month-old son. Lips placed on the toddler's head immediately cause a reaction in his brain. Dopamine is released, which gives the feeling of well-being, but also oxytocin, baptized as the love hormone because it is responsible for affection and attachment. Kissing causes a chemical reaction in the toddler's brain. Reduces fear and increases confidence, provokes feelings of affection and attachment, a sign that the baby understood that he is protected. Vasopresin, is the "glue" that connects mothers to babies in their first months of life, and serotonin, is also released, which regulates the mood. -- via Reese Jones