Thank you for your query,
In winter season because of decreased moisture in the weather leads to dryness of skin.
So in winter in dry skin
individuals care must be taken to maintain skin moisture by using moisturizing soaps and lotions.
You can use that soap for bathing and apply that cream immediately after bathing to retain the water which is present in skin layers after the bath.
You can apply the moisturizing cream or lotion thrice daily depending on the necessity.
The duration depends on the nature of skin and usually applied till the end of winter season.
Hope i have answered your query.