The scent of your shampoo choice is as important as the hair type!
Some scents draw you in and some scents offend* and it's a personal sense of like/dislike and you'll only know if you ask;
Do you shower/bath morning or night?
Am people usually prefer fresh, citris, awake type scents while Pm people are drawn to the relaxing lavender and soothing musk.
Do you have a scent you prefer?
Would you like to smell the shampoo I am using first?
These questions will involve your guest, engage them in the process, help them choose a shampoo and establish customer service!