皮鞋为什么越擦越亮

谢谢！平常皮鞋不穿放那里时间长了看着灰灰的，皮鞋光亮油光程亮，实记是油脂层放的光度。

皮鞋上油前后原来有这么大的差距，难怪上油了皮鞋会越擦越亮{!-- PGC_VIDEO:{"thumb_height": 360, "vposter": "http://p0.pstatp.com/origin/2e24400058ae42f360a1c "thumb_width": 648, "vid": "v02016690000bn8hhtbrm1nfqkahik6g "vu": "v02016690000bn8hhtbrm1nfqkahik6g "duration": 79.8, "thumb_url": "2e24400058ae42f360a1c "thumb_uri": "2e24400058ae42f360a1c "video_size": {"high": {"duration": 79.8, "h": 360, "w": 648}, "ultra": {"duration": 79.8, "h": 360, "w": 648}, "normal": {"duration": 79.8, "h": 360, "w": 648}}} --}