Full-month baby hands white face black later whether it can white need to be decided according to the specific circumstances, such as sun exposure, eczema and other factors caused by enhanced care or treatment, etc. can become white, but if and heredity, adrenal cortex hyperplasia and other factors related to the general will not become white. Full-month baby hand white face black, parents need to observe the baby in addition to face black, other body parts whether the same black, if not just face black on behalf of a certain limitation, may be and usually sunshine more factors related to the usual attention to good sunscreen, can become white. Also need to pay attention to this period of the baby, there may be facial eczema, eczema slowly get better after there will be a transitional stage, pigmentation, looks black, eczema recovery face will usually slowly become white. On the contrary, if in addition to white hands, other parts are darker, may be related to genetics, adrenocortical hyperplasia and other factors, in this case, the baby will not be white. Full-term babies with white hands and dark faces are advised to seek medical attention if accompanied by other discomforts.