Hair Removal

Hair removal: six methods compared

The six methods differ mainly in where they act. Shaving and depilatory creams cut or dissolve the hair at the surface and hold for 1 to 5 days; waxing, sugaring and epilators pull the hair out with its root and keep the skin smooth for 2 to 4 weeks; laser and electrolysis damage the follicle itself, so a laser course leaves roughly 50% fewer hairs 6 months on, and electrolysis is the only method recognised as permanent. Which one fits you depends on hair colour, body area, skin sensitivity and how much time you are willing to spend.

Surface, root or follicle

Every method belongs to one of three groups, and the group decides how long the result lasts. The first works at the surface. A razor cuts the shaft at skin level, a depilatory cream dissolves it a fraction of a millimetre below; the follicle underneath carries on, and because body hair grows at roughly 0.3 millimetres a day, stubble shows after 1 to 3 days from shaving and after 3 to 5 days from a cream. The blunt cut end feels coarser than the tapered tip it replaced, which is the whole basis of the belief that shaving thickens hair; it does not, because diameter, colour and growth rate are set in the follicle.

The second group pulls. Waxing, sugaring, epilators, tweezers and threading remove the hair with its root; the follicle survives and starts a new hair, which needs 2 to 4 weeks to reach the surface, so the smooth phase is about ten times longer than after shaving. Hairs often return finer after years of pulling, yet none of these methods is permanent.

The third group targets the follicle itself. Laser and intense pulsed light send energy into the pigment of the shaft, which heats the follicle around it; electrolysis destroys follicles one at a time with current or heat through a fine probe. Both depend on the growth cycle: only a follicle in its active phase takes damage, and depending on the body site just 20 to 70% are in that phase at any moment, which is why a laser course spreads over months.

What each method asks of you

Shaving asks for time rather than tolerance. If you shave your legs every 2 days you make about 180 passes a year of 5 to 10 minutes each; change the blade after 5 to 7 shaves and shave with the growth on wet, lathered skin to limit razor burn and ingrown hairs. Depilatory creams dissolve keratin with thioglycolate, capped at 5% under EU cosmetics rules; they stay on for 3 to 10 minutes, smell of sulphur and need a patch test 48 hours before first use, because irritation is their most common problem.

Waxing and sugaring need hair long enough to grip: wax about 5 millimetres, roughly 2 weeks after a shave, sugar paste from 2 to 4 millimetres. Warm strip wax is applied at around 40 to 45 degrees and pulled off against the direction of growth; sugar paste is used near body temperature, flicked off with the growth and sticks to hair more than to skin, which is why many find it milder and why it breaks fewer hairs. Hard or film wax sits between the two and suits the bikini line and face. The area stays red for a few hours; ingrown hairs are the main nuisance from about day 3, especially with curly hair.

An epilator does the same job with rotating tweezers, grips hair from about 0.5 millimetres, but most first-time users find it the most painful pulling method; the pain drops after 3 to 4 rounds. Threading, a twisted cotton thread that catches rows of hair, suits brows and the upper lip and also holds 2 to 4 weeks. In a European salon a half-leg wax is typically 25 to 45 EUR, a bikini wax 20 to 50 EUR.

Laser needs pigment, electrolysis needs patience

Laser and intense pulsed light are the efficient route for dark hair on large areas. The American Academy of Dermatology counts 2 to 6 sessions at intervals of 4 to 6 weeks for most patients, with a 10 to 25% reduction after the first; hormonally driven hair on the face usually needs more, commonly 6 to 10. The evidence for lasting results is thinner than the marketing suggests. A Cochrane review of 11 randomised trials with 444 participants found roughly 50% hair reduction up to 6 months after treatment with alexandrite (755 nanometres) and diode (800 to 810 nanometres) lasers, little evidence for intense pulsed light, Nd:YAG and ruby devices, and no documented long-term removal. Regrowth is usually finer and lighter, and a maintenance session 1 to 2 times a year is realistic.

Because the target is pigment, blonde, red, grey and white hair barely respond, and dark skin absorbs part of the energy itself; darker skin types need a long-wavelength device, usually a 1064 nanometre Nd:YAG with cooling, and more sessions. Home devices use the same principle at far lower output, typically 3 to 7 joules per square centimetre against 15 to 40 in a clinic, so they are slower and less predictable. Redness, swelling and stinging settle within 1 to 3 days; burns and pigment changes come from the wrong settings for the skin in front of the device, so the operator's training matters more than the machine. Sessions cost around 60 to 300 EUR depending on the area.

Electrolysis is the only method with a defensible claim to permanence and works on any hair colour. A fine probe enters each follicle and destroys it with direct current (galvanic), high-frequency heat (thermolysis) or a blend of both. Galvanic current is avoided with a pacemaker or another implanted cardiac device, since it can disturb the device and trigger a dangerous heart rhythm; thermolysis, which uses no current, is the usual alternative. Galvanic treatment takes a minute or more per hair, thermolysis is faster; a 30-minute session clears roughly 60 to 120 hairs, and because not every insertion succeeds, an upper lip typically needs sessions every 1 to 2 weeks over 12 to 18 months at hourly rates of 60 to 120 EUR. For legs that maths rarely works; for a chin, the brows or a patch of grey hair it is often the better choice.

Which method fits which area

Large areas with dark hair, legs, back or chest, favour laser for a lasting reduction and waxing or sugaring for 3 to 4 weeks of peace without commitment. The bikini line is where ingrown hairs and folliculitis cluster: sugaring or hard wax, gentle exfoliation 2 to 3 times a week from day 3 and loose clothing on the day are the usual answer. On the face, the thin skin of the upper lip reacts to warm wax and depilatory cream, threading and sugaring are gentler, and new dark growth on the chin is a reason to think about hormones before booking a laser course; the guide on female facial hair explains why.

Methods can be combined, with one exception. During a laser course you may shave between sessions and should shave 12 to 24 hours before each appointment, but you must not wax, sugar, epilate or pluck in the 4 to 6 weeks before a session: the laser needs the hair inside the follicle to carry its energy, and an empty follicle is invisible to it. Stop pulling methods 4 weeks before your first session, and read the laser guide before you buy a package.

Hygiene, aftercare and when to wait

Several situations call for waiting. If you take isotretinoin or another oral retinoid, waxing and sugaring stay off the table until 6 months to 1 year after the last tablet, because the skin tears; topical retinoids and acid exfoliants should be paused 3 to 4 weeks before a wax. Sunburnt, broken, infected skin, or an area with warts or a cold sore, is not waxed, lasered or creamed until healed. 2 to 4 weeks without sun before and after a laser session is a condition, not a suggestion, because tanned skin holds more pigment and burns more easily. Most clinics postpone laser and electrolysis in pregnancy as a precaution rather than a proven risk, and blood thinners mean more bruising from waxing, threading and electrolysis, so mention both before booking.

In the salon, hygiene is visible. A fresh spatula for every dip into the wax pot, gloves, single-use electrolysis probes and a patch test on new skin are the minimum; an allergy to rosin, the resin in most warm waxes, is a reason to ask for a synthetic or sugar-based alternative. Afterwards the rule is the same for every method that irritates: 24 to 48 hours without sauna, pool, sunbed or sport that rubs the area, and a broad-spectrum SPF 30 to 50 on freshly treated skin that sees daylight for at least 2 weeks, because inflamed skin pigments faster. The Sun Exposure Timer helps with that.

Questions to ask before you book

Frequently asked

Does shaved hair grow back thicker?

No. A razor cuts the shaft above the follicle and changes nothing below the skin; the regrowth feels coarser only because the cut end is blunt instead of tapered. Stubble shows after 1 to 3 days because body hair grows about 0.3 millimetres a day.

Which method lasts longest?

Only electrolysis is recognised as permanent. Laser and intense pulsed light reduce hair, with roughly 50% fewer hairs 6 months after a course in the trials, and usually need a maintenance session 1 to 2 times a year; waxing and sugaring hold 3 to 4 weeks, shaving 1 to 3 days.

Can I wax or sugar during a laser course?

No. Between sessions you may shave, and you should shave 12 to 24 hours before each appointment, but waxing, sugaring, epilating and plucking remove the hair the laser needs in the follicle, so stop them 4 to 6 weeks before a session.

Is sugaring milder than waxing?

For most people yes. Sugar paste is used near body temperature, sticks to hair more than to skin and is removed with the direction of growth, which breaks fewer hairs; it also works from 2 to 4 millimetres of hair length, while wax needs about 5.

Does laser work on blonde or grey hair?

Barely. Laser and intense pulsed light target the pigment in the hair shaft, so blonde, red, grey and white hair absorb too little energy; for those hairs electrolysis, which destroys each follicle with current or heat, is the only permanent method.

What should I avoid after a treatment?

For 24 to 48 hours no sauna, swimming pool, sunbed or sport that rubs the area, and no perfumed products for a day. Use a broad-spectrum SPF 30 to 50 on treated skin that sees daylight for at least 2 weeks, because inflamed skin pigments faster.

Sources

• Cochrane: Unwanted hair removal by laser systems and intense pulsed light sources (Haedersdal M, Gotzsche PC, 2006) · 11 randomised trials, 444 participants, roughly 50% hair reduction up to 6 months with alexandrite and diode lasers, little evidence for IPL, Nd:YAG and ruby, no documented long-term removal
• American Academy of Dermatology: Laser hair removal, FAQs · 2 to 6 sessions, intervals of 4 to 6 weeks, 10 to 25% reduction after the first, side effects settle in 1 to 3 days, works best on light skin with dark hair
• DermNet: Waxing · warm and cold wax, regrowth after 2 to 3 weeks, no waxing until 6 months to 1 year after oral retinoids, stop topical retinoids 3 to 4 weeks before, rosin contact allergy, not on sunburnt or broken skin
• DermNet: Electrolysis · galvanic, thermolysis and blend methods, a minute or more per hair with galvanic current, electrolysis and laser as the only methods that may be permanent, redness for a few days

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This guide is for general information. It does not replace medical or professional cosmetic advice or an examination.