Hair and scalp analysis before a service

Four findings decide what any chemical service is allowed to be, and the exam expects you to define each one precisely rather than approximately. Texture and density in particular are routinely swapped, and an item will be written to catch exactly that.

Texture	The diameter of one individual strand
Density	How many strands there are — fine texture and high density coexist happily
Porosity	Tested by sliding the fingers along a strand toward the scalp
Elasticity	Wet hair stretches about half its length and recovers
Postpone the chemical service	A wet strand that stretches and does not recover
When the analysis happens	Before every service, on dry hair
Why dry	Build-up, natural fall and scalp condition are only visible dry
Growth patterns	Cowlicks and whorls change what a haircut can actually do
Record the findings	The next service depends on knowing how this hair behaved

Where the point is lost: The scalp half of the analysis is the half that stops services. Abrasions, inflammation or open sores rule out massage and rule out every caustic chemical. The greasy, waxy form of dandruff with inflammation is a referral rather than a salon treatment, tinea capitis is a contagious fungal infection, and head lice found while parting hair means stopping, telling the client privately, and referring. In none of those cases do you name the condition as a diagnosis.