You have shaved or waxed the same area every week for years, and each time you tell yourself you will look into laser next month.
It is not that you are putting it off. It is that you have heard laser is permanent, you have also met someone whose hair came back, and you cannot tell which story is true. Both are partly right.
Laser gives long-term reduction, and for many people it is large enough that they stop thinking about hair in those areas. It does not promise zero hair for life. What decides your result is your hair, your skin and your hormones, and this guide explains how.
Permanent reduction, not permanent removal
The laser targets the pigment in the hair and heats the follicle, the small pocket the hair grows from. A damaged follicle grows finer hair, or none. This is why the phrase used by regulators is permanent hair reduction. The US FDA defines it as a long-term, stable reduction in the number of hairs regrowing after a course of treatment, judged over a period longer than the hair growth cycle. It is not the end of all hair. The American Academy of Dermatology says most patients stay hair free for months or even years, and that hair which returns tends to be finer, lighter and less dense.
Why hair can come back
- Follicles in the resting phase. Hair grows in cycles, and only follicles in the growth phase are affected in each session. That is why a course of sessions is needed.
- Hormones. Conditions such as PCOS, thyroid problems or hormone changes can wake up new follicles over time. This is the most common reason for regrowth.
- Light, grey or white hair. The laser needs pigment to target. Fine, light or grey hair responds poorly.
- Skipped sessions. Missing the gap between sessions leaves follicles untreated.
- Unsuitable settings or machine. Indian skin needs settings chosen for darker skin, or results suffer and the skin is at risk.
What results to expect
Most people need a course of sessions, because the hair is treated in stages. The American Academy of Dermatology describes 2 to 6 treatments spaced 4 to 6 weeks apart as typical. Hormonal hair, darker skin that needs gentler settings, and light hair can mean a longer course. After the course, a typical result is a clear drop in hair, with some patients needing an occasional top-up. Your doctor can give you a realistic range after examining you.
| Factor | Better response | Slower response |
|---|---|---|
| Hair colour | Dark, coarse | Light, grey, white, fine |
| Hormones | Stable | PCOS or thyroid imbalance |
| Area | Underarms, legs, bikini | Upper lip and chin in hormonal cases |
| Session gaps | Kept on time | Skipped or late |
Is it safe for Indian skin
Yes, when the laser and settings suit darker skin and the person doing it is experienced. The American Academy of Dermatology warns that burns, lasting colour changes and scars can occur when it is done by an inexperienced operator. Rarely, laser near the mouth can set off a cold sore. The risks come from the wrong machine, the wrong settings, or a tanned skin. We use a laser designed for Indian skin tones and ask you to avoid sun and tanning before treatment. Our detailed guide to laser hair removal for Indian skin covers this further.
If hormones are the reason hair keeps coming back
If you have thick growth on the chin, jawline or upper lip, along with irregular periods or acne, tell your doctor. Hormonal causes need to be looked at alongside the laser, or regrowth will continue. Reviews of hormone-driven hair growth, such as in PCOS, suggest that laser together with treatment of the hormonal cause works better than laser alone. Laser then works as part of a plan, not on its own.
Questions to ask before you book
- Which laser will you use on my skin, and who sets the parameters?
- How many sessions do you expect for my hair and area?
- What is the plan if hair returns?
- Can you check for hormonal causes first if I have heavy facial hair?
See our laser hair removal page for areas and the machine we use.
