Is Laser Hair Removal Permanent? Sessions, Results & Side Effects

Laser hair removal is the most popular long-term alternative to threading, waxing and shaving in Pakistan. The three questions we hear most often are: is it permanent, how many sessions will I need, and is it safe for my skin?

Here are honest answers, based on how diode laser actually works on South Asian skin types.

How laser hair removal works

A medical diode laser sends light energy into the pigment of the hair. That energy turns into heat, which damages the follicle and reduces its ability to grow new hair. Because only hairs in the active growth phase (anagen) respond, treatment is spread across several sessions to catch every follicle in its growth phase.

Is laser hair removal permanent?

Laser hair removal gives permanent hair reduction, not guaranteed permanent removal of every hair. After a full course most people see a 70–90% reduction. The hair that remains is usually finer, lighter and slower growing. Some follicles may reactivate over time, particularly with hormonal changes, so occasional maintenance sessions are normal.

Hair on hormonally sensitive areas — such as the chin and jawline in women with PCOS — is more likely to return. Read more in our guide to excess hair growth in women.

How many sessions for laser hair removal?

Most patients need 6 to 8 sessions, spaced four to eight weeks apart depending on the area:

• Face and upper lip: every 4–6 weeks, often 8+ sessions
• Underarms and bikini: every 4–6 weeks, 6–8 sessions
• Arms and legs: every 6–8 weeks, 6–8 sessions
• Back and chest (men): every 6–8 weeks, 8+ sessions

Darker, coarser hair responds fastest. Very fine, blonde, grey or red hair does not contain enough pigment for laser to work well.

Laser hair removal side effects

When performed with the right settings on a medical-grade laser, side effects are usually mild and temporary:

• Redness and small bumps around follicles for a few hours to a day
• Mild swelling or a warm, sunburn-like feeling
• Temporary darkening or lightening of the skin (more likely after sun exposure)
• Rarely, blistering if the skin is tanned or settings are too high

Choosing a clinic that adjusts the laser for your skin type is the best way to avoid complications. Our article is laser hair removal safe for sensitive skin covers this in detail.

Is laser safe for brown skin?

Yes, when the right laser is used. Diode lasers with longer wavelengths bypass more of the skin’s pigment and focus on the follicle, making them suitable for Fitzpatrick skin types III–V common in Pakistan. Avoid tanning and bleaching creams for at least two weeks before each session.

Preparing for your sessions

• Shave the area 24 hours before — do not wax, thread or pluck for four weeks.
• Avoid sun exposure and self-tan for two weeks.
• Arrive with clean skin, free of creams and deodorant.
• Tell us about medicines, especially photosensitising antibiotics or isotretinoin.

What affects your results?

• Hair colour and thickness – dark, coarse hair responds best.
• Hormones – PCOS, thyroid issues and some medicines stimulate new growth.
• Body area – legs and underarms clear faster than the face.
• Consistency – missing sessions allows new hair cycles to escape treatment.
• Machine and settings – medical diode lasers are more effective than home IPL devices.

Laser hair removal myths

• “Laser causes cancer.” – Laser hair removal uses non-ionising light that only reaches the follicle; it is not linked to cancer.
• “It makes hair grow thicker.” – Rarely, fine hair on the face can be stimulated (paradoxical hypertrichosis), but this is uncommon and managed by adjusting settings.
• “It does not work on brown skin.” – Modern diode lasers are designed to treat darker skin safely.
• “Shaving between sessions ruins results.” – Shaving is fine; waxing and threading should be avoided because they remove the root laser targets.

Laser vs threading, waxing and creams

Threading and waxing last a few weeks and repeatedly irritate follicles, often leaving dark patches and ingrown hairs. Hair removal creams can burn sensitive skin. Over a few years, a laser course is usually more comfortable and cost-effective, with smoother skin and less pigmentation. Existing dark marks from threading can be improved with pigmentation treatment.

Prices and next steps

Session prices at our clinics range from ₨4,500 for half face to ₨23,000 for full body, with a Price Match Guarantee. See full prices on laser hair removal in Lahore, laser hair removal in Islamabad, full body laser hair removal and laser hair removal for men.

Key takeaways

• Laser gives permanent reduction, not guaranteed removal.
• Most people need 6–8 sessions.
• Side effects are mild with the right laser and settings.
• Diode laser is safe for brown skin.

Frequently asked questions

Book a consultation at London Aesthetics UK

Every treatment at London Aesthetics UK starts with a consultation so we can recommend what is genuinely right for your skin. Visit us at 18 CCA Street 7, DD Block, DHA Phase 4, Lahore or Jinnah Boulevard, Sector E, DHA Phase II, Islamabad, call +92 328 8886444, or explore all of our aesthetic treatments.

This article is for general information and does not replace a personal medical consultation. Results vary between individuals.