A phenotype represents a defensive stance rather than a natural constitutional expression. Phenotypes can develop from life shocks, traumas, conflicts and false beliefs. Over time, as a patient works through past hurts, their natural genotype becomes more visible. Natrum muriaticum is made from sodium chloride, or table salt. It illustrates retention and difficulty letting go. People needing this remedy are overly sensitive, reserved, and hold emotions in to avoid future hurt. They are serious, private, and cautious about security to feel safe. Physical symptoms include headaches, dry skin, constipation from difficulty releasing. Treatment may be resisted as exploring emotions feels threatening.