First, read the English article below.

Alternate your purple shampoo use with non-tinted shampoos to keep your tint light and even. If you have warmer naturally blonde hair, you may even use the shampoo only when you notice yellowing. Pay attention to your hair and use your judgment when establishing a routine. If you're not noticing any changes after a month, you can always up your routine to 2-3 times a week. Although purple shampoo will not dye your hair, you may notice some lilac tints after you wash if it's too strong. To prevent this, mix your purple shampoo with water in a 2:1 ratio and put it in a spray bottle.  If you need to dilute the mixture further, add more water. This option is ideal for individuals with already-warm hair who are just touching up their color. In lieu of using the shampoo in the bath or shower, massage the shampoo into your hair before you get it wet. Let it sit for 10-15 minutes, then rinse it out with cold water. Applying the shampoo dry can leave your hair glossier and rid it of a persistent brassy hue. Try this method if you have severely brassy hair and have seen limited results from washing with purple shampoo. Purple shampoo can dry out your hair over time. To prevent brittle, unhealthy hair, deep condition your hair several times a month after using purple shampoo, or whenever your hair starts to feel dry. If your hair is frizzy or flyaway, often has split ends, exhibits a dull color, or is prone to breakage, you may have dry hair. 

Now, please write a short abstract for it in Chinese. Abstract:
每周用一次紫色洗发水，或者当你注意到头发出现黄铜色时用紫色洗发水。 如果对你的头发来说，紫色洗发水太浓，那就稀释一下。 将紫色洗发水涂在干燥的头发上，使头发有光泽。 每月做几次深度护理。