Correct

洗发

/ xǐ fà / 
Strokes

Example

As a Verb

wash one's hair

1
Xǐfà
洗发
hùfà
护发
yòngpǐn
用品

shampoos and hair care products

2
Píjiǔhuā
啤酒花
xǐfà
洗发

beer hair wash; wash one's hair with beer

3
Yòng
用
xǐfàjīng
洗发精
xǐfà
洗发

wash one's hair with shampoo; shampoo one's hair; have a shampoo