问:有人说给初生婴儿剃去头发、眉毛、剪去睫毛,会使头发、眉毛又黑又浓,睫毛又密又长。是这样吗? (上海陈阿根) 答:头发、眉毛、睫毛都是由表皮细胞衍生而成的,实际上是一种角化的上皮细胞。表皮下毛发根部顶端膨出处为毛球,分裂增殖能力很强,是毛发不断生长的物质基础。毛球下面有毛乳头,可提供黑色素与营养。毛根附近有皮脂腺可分泌皮脂润滑毛发,並 Q: Some people say that shaving hair, eyebrows and eyelashes for newborn babies will make hair, eyebrows dark and thick, and eyelashes dense and long. Is this? (Shanghai Chen Agen) A: hair, eyebrows, eyelashes are derived from epidermal cells, is actually a keratinized epithelial cells. Under the epidermis, the top of the root of the hair bulge is hair bulb, which has strong ability of division and proliferation and is the material basis for the continuous growth of hair. Fur hair below the nipple, can provide melanin and nutrition. Sebaceous glands secrete sebum around the hair to lubricate the hair, and