As part of your client consultation, and before you start your haircut, it is also important to check your client's hairlines.
You should do this when the hair is dry and again when the hair is wet after shampooing. Your client may have used mousse or gel on their hair, which may disguise the real hairline.
Not everyone has a perfect hairline so make sure you check for uneven growth and awkward, moving shapes.
There are four areas to look at:
Take out a fine section of hair and, using the wide part of your cutting comb, gently comb the hair. You will be able to see clearly the hairlines and growth patterns of the hair.