It's the question I get asked most often in consultations. And the honest answer is: it depends. But I'm going to give you all the data so you can work out your own scenario and arrive at summer with well-calibrated expectations. From our salon 25 min from central Madrid.
The factors that determine how many sessions you need
There's no single number that fits everyone. These are the variables that matter:
- Skin type (Fitzpatrick): lighter skin with dark hair responds best. Darker skin or higher Fitzpatrick types need more sessions or adjusted parameters.
- Hair colour: laser works on the melanin in the hair. Dark hair absorbs the energy best. Blond, red or white hair responds much worse.
- Body area: underarms and bikini line respond very well (6–8 sessions usually suffice). Legs, because of hair density and cycle, can need 8–10 sessions.
- Hair density and thickness: thicker hair responds sooner; finer hair may need more sessions.
- Hormonal changes: pregnancy, menopause or hormonal treatments can affect laser response and may need extra maintenance sessions.
Guidance by area: Underarms: 6–8 sessions · Bikini line: 6–8 sessions · Full bikini/Brazilian: 8–10 sessions · Full legs: 8–10 sessions · Upper lip: 6–8 sessions · Back: 8–12 sessions
What reduction can I expect per session?
By the first 2–3 sessions, most clients notice a 30–50% hair reduction in treated areas. What grows back is finer, lighter and takes longer. After 6 well-spaced sessions, reduction is usually 70–85%. For many people that's already enough to hit the beach without shaving daily.
100% permanent reduction is uncommon (hormonal hair can always re-emerge), but the results are very long-lasting and most clients only need an annual maintenance session or two.
For summer specifically: with 3–4 well-done sessions you'll already notice a significant difference. It won't be the final result, but it's enough to feel more relaxed. The full treatment usually spans 8–12 months.
The protocol we follow at Esencia Estética
Before starting any treatment, we do a free personalised consultation where we assess your skin type, hair type and the areas to treat. That allows us to adjust the laser parameters so it's as effective and safe as possible for your specific skin.
The frequency between sessions is also adjusted according to how your skin responds and the area treated. There's no single protocol for everyone: yours is designed with you.
Tell me which areas concern you and when you want results by. I'll tell you exactly how many sessions you need and how to plan them.