求翻译：　　头发主要成份是角蛋白，含有多种胺基酸及几十种微量元素。若缺铁和蛋白质头发就会变黄及分叉。缺植物油、维生素A、蛋白质和碘时，头发会发干、无光泽及容易折断。缺维生素B群时会出现脂漏性皮炎及头发脱落现象。是什么意思？

The main ingredient is keratin hair, containing a variety of amino acids and several trace elements. If iron deficiency and hair will turn yellow and forked proteins. Lack of vegetable oil, vitamin A, protein and iodine, the hair will be dry, dull and easily broken. Vitamin B complex occurs when seb

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　　The hair essential component is a keratin, includes many kinds of aminoacid and several dozens kind of trace elements.If lacks the iron and the protein hair can change yellow and the furcation.When lacks the vegetable oil, Vitamin A, the protein and the idodine, the hair can become dry, not have t

　　Main ingredients in hair is keratin, includes many kinds of amino acids and dozens of trace elements. If hair becomes yellow iron and protein deficiency and fork. When vegetable oils, protein, vitamin a and iodine deficiency, hair dry, dull and easily broken. Vitamin b deficiency grease leakage oc

　　Main ingredients in hair is keratin, includes many kinds of amino acids and dozens of trace elements. If hair becomes yellow iron and protein deficiency and fork. When vegetable oils, protein, vitamin a and iodine deficiency, hair dry, dull and easily broken. Vitamin b deficiency grease leakage oc