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头发对人的外观和精神面貌都是至关重要的。秀美的头发不仅使人英俊、娇美、容光照人,还能增添青春的活力。毫无疑问,如云秀发是人类最珍贵的天然装饰品。人体组织除骨髓之外,以头发的生长速度为最快,平均每天增长0.2～0.5mm。在健康正常的情况下,毛发的寿命为2至3年,最长可达到六年,每天能自然生长毛发50～100根,也掉50～100根头发。健康的头发应该柔软、光亮而富有弹性,外覆薄薄的一层皮脂;湿时仍然柔软,略有纠结。不健康的头发分三类:油
Hair is crucial to people’s appearance and mental outlook. Beautiful hair not only makes handsome, charming, radiant, but also add youthful vitality. There is no doubt that such as cloud hair is the most precious human natural decorations. In addition to bone marrow tissue of human tissue, hair growth rate of the fastest, an average daily increase of 0.2 ~ 0.5mm. Under normal conditions, the life span of hair is two to three years and the longest can reach six years. It can naturally grow 50 to 100 hairs per day and lose 50 to 100 hairs. Healthy hair should be soft, bright and elastic, covered with a thin layer of sebum; wet still soft, slightly tangled. Unhealthy hair divided into three categories: oil