The researchers graded the wrinkles, roughness and overall severity of skin aging before treatment with the lotions and at two, four, eight, 16 and 24 weeks after the start of treatment.

• 研究人员分别对润肤乳治疗开始前，治疗开始后2周，8周，16周和24周的皱纹、糙度和整体皮肤衰老严重程度进行了评分。