Pillar guide
Laser Hair Removal: The Complete Guide
Most people describe laser hair removal as a quick snapping or warming sensation rather than sharp pain, and modern devices use cooling to improve comfort. Sensitivity varies by area: the upper lip, bikini line and underarms are generally more sensitive than legs or arms. It is usually described as uncomfortable for a moment rather than painful.
How it works
Laser energy is absorbed by the pigment in the hair shaft and follicle, disrupting the follicle’s ability to produce hair in future. Because the treatment targets pigment, the relationship between your hair colour and your skin tone determines how well it will work.
Dark hair on lighter skin responds best. Light, grey and red hair contain little of the pigment the laser targets, and results are typically limited. A clinic that will not tell you this before taking your booking is not worth booking with.
Why it takes a course, not a session
Hair grows in cycles, and laser only affects follicles that are in the active growth phase at the time of treatment. At any given moment only a proportion of your hair is in that phase.
This is the entire reason a course is required. Sessions are spaced to catch different hairs across successive cycles, which is why 6 to 10 treatments is a typical range depending on the area.
Reduction, not removal
The accurate term is long-term hair reduction. Most people achieve a substantial and lasting drop in density, with occasional maintenance sessions after the initial course.
Permanent removal is a marketing phrase rather than a clinical one. Expect significantly less hair, finer regrowth and far less maintenance, rather than a permanently bare result.
Before your appointment
- Shave the area beforehand. The laser targets the follicle, not the hair above the skin.
- Do not wax, pluck or thread between sessions, as these remove the follicle the laser needs.
- Avoid sun exposure and fake tan beforehand, both of which affect suitability and safety.
- Expect a patch test before your first full session.
Common questions
Which areas hurt most?+
Areas with thinner skin and denser hair tend to be more sensitive, particularly the upper lip, bikini line and underarms. Larger areas like legs and arms are generally more comfortable. Tell your practitioner if anything is uncomfortable, as settings can be adjusted.
How long between sessions?+
Sessions are spaced several weeks apart to align with the hair growth cycle. The exact interval varies by treatment area and is set out in your plan.
Will it work on my hair?+
It depends on your hair colour and skin tone, which is assessed at consultation. Dark hair responds best. If your hair is very light, grey or red, expect limited results.
Keep reading
All treatments require an individual consultation and suitability assessment. Results vary between individuals. Information on this website is provided for general information purposes only and does not constitute medical advice.