Evening primrose oil and avocado oil have a skin-protecting function in the formula of the foam. The oil obtained from the seeds of evening primrose contains many polyunsaturated fatty acids. They are essential, which means that the body needs them, but cannot produce them itself. The high content of linoleic acid and gamma-linolenic acid is particularly important for skin care. They strengthen the skin barrier and support the natural skin moisture balance. Mild avocado oil, which is rich in active ingredients, has similarly useful properties. It stimulates cell regeneration and also prevents moisture loss.