A skin care cream can exert strengthened anti-bacterial effects and effects of curing athlete's foot, miliaria, freckles and other skin diseases for a prolonged period of time. The skin care cream is prepared by adding baked powder of highly calcium-containing shells such as dead shells or pearls to and mixing them with a raw material for manufacturing cosmetic cream. Preferably, dead shells are baked at temperature between 1,000 and 1,300.degree. C. Preferably, unbaked shell powder is further added to and mixed with a raw material for manufacturing cosmetic cream.