假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。

Last Friday my mom decided to color his hair. She studied with all the hair products at the drugstore. The color she choose came in a box which had a picture of a woman that hair color looked just perfect. Mom was sure same color would look great on her. She put the new color on her hair or sat still for 30 minutes, just as the directions saying. However, instead of the brownish red hair she had hoped for, she final got purple hair. She went right into the shower to washing it, but it was no use. At least one thing proved truth: the color wouldn't wash out.