Dry skin requires the use of very delicate ingredients. She is very, very delicate! Soap can make it even drier. It is recommended to use products intended for atopic skin, e.g. washing bars containing detergents without allergens. The addition of vitamin E and glycerin guarantees that the skin will retain its lipid coat, prevent moisture loss, and will be elastic. No care will change that!
What about taking a bath?
Pat your skin dry, using only a soft towel. Avoid rubbing the skin hard. Immediately after drying your skin, apply a moisturizing lotion to it to keep it properly hydrated. People with dry and atopic skin that is prone to irritation should apply the care ingredients even several times a day!