Depilation and Threading Services
What the exam tests
This domain tests hair growth cycles, methods of temporary hair removal, patch testing, wax temperature, threading technique, hygiene, aftercare and contraindications.
Core rules and concepts
- Hair grows in anagen, catagen and telogen phases. Waxing and threading remove hair from the root and work best when hair is in anagen.
- Methods include threading, waxing, sugaring, depilatory creams and shaving. Each has different risks and regrowth patterns.
- Patch test wax, dye or depilatory cream before first use. Check the client's medications, recent peels, sunburn, broken skin and known allergies.
- Wax must be at a safe working temperature; test on the therapist's wrist or as the manufacturer directs. Never double-dip a spatula.
- Threading uses a cotton thread twisted and rolled over small sections; support the skin and work in controlled areas. Apply aftercare such as soothing gel and sunscreen.
Worked example
An upper-lip threading client has inflamed acne around the mouth. Reasoned decision: do not thread over active inflammation. Explain that the thread can tear lesions and spread irritation, offer to reschedule after the skin settles, and suggest a patch test next visit. Treating because the client insists is unsafe and can cause marks.
Traps that cost marks
Do not wax over irritated or infected skin. Do not double-dip wax. Do not skip the patch test. Do not use wax hotter than the client can tolerate. Do not promise permanent hair removal from waxing or threading.