Contractubex gel has a beneficial effect on wound healing. The onion extract has an anti-inflammatory effect, and it inhibits the cell growth which support inception of unsightly scars. Heparin has anti-inflammatory effects and relaxes tissues. Allantoin increases the ability if the tissues to bind water, and thus it supports formation of a new tissue in the injured site (epithalization). Contractubex gel is used for treating various kinds of scars (exuberant scars, visually disturbing scars after operations, amputations, burns or in scar shrinkage). The preparation can be used by adults, adolescents and children from the age 3. The preparation can be used for bad-healing or not fully healed scars only on the basis of a physician's recommendation.