Fig. 1From: The menstrual cycle regularity and skin: irregular menstrual cycle affects skin physiological properties and skin bacterial microbiome in urban Chinese womenCustomized scoring standard for “Regular cycles” (C1), “Less regular cycles” (C2) and “Irregular cycles” (C3) groups; if duration of menstruation/interval of menstruation/blood loss/dysmenorrhea gets is assessed as 2 points, the total score, even if only have 2 points, is still in the Irregular cycles groupBack to article page