The Care Soap advertisement uses the mother's concern for her child. It tells the mother that her love and care are best shown by using this particular brand of soap. Because of this, the mother begins to feel that using this soap is a sign of how much they love their child. In this way, the advertisement uses the love of a mother for her child to sell this expensive soap.
Just think about those mothers who cannot afford this soap. They might begin to feel that they are not giving their children the best care.