In the salon
How many hair removal sessions are needed, and how often
In short
How many sessions of light-based hair removal does a client need?
A course, not one session. Light acts on hair that is actively growing at that moment, and only part of the hair is in this phase at any time. The rest is reached in the next sessions, when it starts to grow. According to Innovatione, a lasting effect with IPLASER takes 6–8 treatments on dark hair and 8–10 on light hair, at intervals of 6–8 weeks. The exact protocol depends on the area, the skin type and the hair. Shorter intervals do not make the course faster: the hair that was resting has not started to grow yet. The honest wording for clients is a long-lasting reduction of hair growth, with possible maintenance treatments later, not ‘hair removal forever’.
Why is one session never enough?
A hair goes through phases: active growth, a transition and rest. Light works best on hair in the active growth phase, when the hair is connected to the follicle and holds the most pigment. At any moment, only part of the hair on an area is in this phase.
So each session reaches the hair that is growing at that moment. The rest is reached in the next sessions, when it enters the growth phase. This is why a course is planned, and why the result builds up from session to session.
How many treatments does a course take?
| Hair | Treatments | Interval |
|---|---|---|
| Dark | 6–8 | 6–8 weeks |
| Light | 8–10 | 6–8 weeks |
The exact number depends on the area, the skin type, the hair thickness and individual factors such as hormones. The protocol for each case is covered in training.
How long does one session take?
| Area | Time |
|---|---|
| Face | 5 min |
| Underarms | 5–10 min |
| Bikini | 20–25 min |
| Lower legs | 30 min |
| Full legs | 40–50 min |
Can the interval be shorter?
Shorter intervals do not make the course faster. The hair that was resting at the last session has not started to grow yet, so an early session reaches little that is new. The interval in the protocol follows the growth cycle.
What does ‘long-lasting’ honestly mean?
Light-based hair removal gives a long-lasting reduction of hair growth. Some hair can grow back over time, for example after hormonal changes, and then maintenance treatments are possible. No honest specialist promises that hair will never return.
Sell a course and a realistic result, not ‘forever’. A realistic promise brings fewer complaints and more returning clients.
How to plan the course with the client
- Agree the areas and assess the skin and hair at the consultation.
- Explain the number of treatments in the protocol, and why light hair takes more.
- Book the next sessions at the intervals the protocol sets.
- Take photos at the start and during the course to show progress.
- Agree in advance what happens after the course: maintenance if needed.
How results look over a course is shown in 155 before and after photos. For skin type and hair colour, see the article on dark skin and light hair.
Questions and answers
How many IPL hair removal sessions are needed?
According to Innovatione, 6–8 treatments on dark hair and 8–10 on light hair, at intervals of 6–8 weeks.
Why do sessions need to be weeks apart?
Each session reaches the hair in the active growth phase. The rest enters this phase later, so the next session is planned for when it starts to grow.
Is light-based hair removal permanent?
It gives a long-lasting reduction of hair growth. Some hair may grow back over time, and maintenance treatments are then possible.
When is the result visible?
It builds up from session to session over the course. Progress is easiest to see on photos taken at the start and during the course.
How long does a session take?
From about 5 minutes for the face to 40–50 minutes for full legs.
This material is for general information and is not medical advice. The course is planned by a specialist. Checked on 10 November 2026.
