8 Frequent Trimmings Can Make Hair Grow Faster. 经常修发会使其长得更快。

Hair, whether it is cut or not, grows about half an inch per month. Hair does grow slightly faster in the summer, but that is due to hormones rather than the stylist's scissors. A worrying trend among young Chinese girls is to rub a paste made of crushed contraceptive pill into their scalp and hair. This does not lead to stronger, glossier, faster growing hair. In fact, the hormones, while initially improving the condition of the hair, quichly lead to hair loss.
无论剪发与否，头发都会以每月约半英寸的速度生长。头发在夏季的确会生长得稍快一些，但那要归功于荷尔蒙而非发型师的剪刀。在年轻的中国女性中出现了一股令人堪忧的风尚，那就是将避孕药碾成粉末弄成糊涂到头皮和头发上。这不会令头发更加坚韧、更有光泽、长得更快。事实上，荷尔蒙虽然在最初会改善头发状况，但会迅速导致脱发。

P.S. You can't repair split ends. The only way to rid of split ends is to cut them off and prevent them in the future with good hair care. A good trim will eliminate split ends, making hair look healthier and livelier.
此外，你不可能修复分叉。摆脱分叉的唯一方法就是将其剪掉并精心护理头发以防其日后出现。修剪得好就会清除分叉，令头发看上去更加健康和洒脱。