{"id":11512,"date":"2026-08-21T12:50:40","date_gmt":"2026-08-21T12:50:40","guid":{"rendered":"https:\/\/oz-clinic.co.il\/how-laser-hair-removal-works\/"},"modified":"2026-08-21T12:50:40","modified_gmt":"2026-08-21T12:50:40","slug":"how-laser-hair-removal-works","status":"publish","type":"post","link":"https:\/\/oz-clinic.co.il\/en\/how-laser-hair-removal-works\/","title":{"rendered":"How Laser Hair Removal Works &#8211; What Actually Happens in a Treatment"},"content":{"rendered":"<p>The short answer: how does laser hair removal work? The laser beam is absorbed by the melanin in the hair root, converted into heat, and disables the follicle. Only hairs in the active growth phase respond, which is why it takes a series of <a href=\"https:\/\/oz-clinic.co.il\/%d7%9b%d7%9e%d7%94-%d7%98%d7%99%d7%a4%d7%95%d7%9c%d7%99-%d7%94%d7%a1%d7%a8%d7%aa-%d7%a9%d7%99%d7%a2%d7%a8-%d7%91%d7%9c%d7%99%d7%99%d7%96%d7%a8-%d7%a6%d7%a8%d7%99%d7%9a\/\">about 12 treatments<\/a> in three stages rather than a single session.<\/p>\n<nav class=\"oz-toc\" aria-label=\"Guide contents\">\n<p class=\"oz-toc-t\">What is in this guide<\/p>\n<ul>\n<li><a href=\"#s1\">What happens during a laser hair removal treatment &mdash; step by step<\/a><\/li>\n<li><a href=\"#s2\">Why it takes a series and not one treatment<\/a><\/li>\n<li><a href=\"#s3\">What it feels like<\/a><\/li>\n<li><a href=\"#s4\">What decides whether it will work on you<\/a><\/li>\n<li><a href=\"#s5\">How long a treatment takes &mdash; and why that is also the price<\/a><\/li>\n<li><a href=\"#s6\">Laser, IPL and electrolysis &mdash; what is the difference<\/a><\/li>\n<li><a href=\"#s7\">Who it is not suitable for<\/a><\/li>\n<li><a href=\"#s8\">What to do before and after<\/a><\/li>\n<li><a href=\"#s9\">Questions that keep coming up<\/a><\/li>\n<\/ul>\n<\/nav>\n<h2 id=\"s1\">What happens during a laser hair removal treatment &mdash; step by step<\/h2>\n<p>It starts with an assessment. We look at your skin tone and hair type, go over your medical background and any medication, and only then set the intensities. Here the reading is also done with a dermatoscope that scans the skin and the hair.<\/p>\n<p>The area needs to be shaved &mdash; the hair inside the follicle, not above it. Then the head is moved across the skin in one continuous motion, with cooling running at the same time. The energy reaches the root while the surface of the skin stays cold.<\/p>\n<p>The treatment itself is shorter than most people imagine. What takes time is the assessment and the preparation, not the pass itself.<\/p>\n<h2 id=\"s2\">Why it takes a series and not one treatment<\/h2>\n<p>Every hair goes through a cycle of growth, transition and rest, and at any given moment only some of the hairs are in the active phase. A resting hair will not respond to the beam, so an area cannot be cleared in one go.<\/p>\n<p>On average each treatment reduces about 30% of the hair in the area, and the reduction accumulates. That is where the number comes from &mdash; a full series is about 12 treatments in three stages &mdash; and also why there is a gap between them. More in the <a href=\"https:\/\/oz-clinic.co.il\/how-often-laser-hair-removal-treatments\/\">interval guide<\/a>.<\/p>\n<h2 id=\"s3\">What it feels like<\/h2>\n<p>Most people describe heat that rises and settles. What changes the sensation is the cooling: the head cools the skin at the very moment the energy goes in, so the top layer stays protected.<\/p>\n<p>The more sensitive areas are the ones where the skin is thin and the hair is thick &mdash; underarms, bikini and upper lip.<\/p>\n<h2 id=\"s4\">What decides whether it will work on you<\/h2>\n<p>Not skin colour alone and not hair colour alone, but the contrast between them. Dark hair on light skin is the easiest case, but four different wavelengths make it possible to adapt to darker tones and finer hair as well.<\/p>\n<p>White hair does not respond, because it has no melanin to absorb the beam. Very light or vellus hair responds only partially. We say that at the assessment, not after three treatments.<\/p>\n<h2 id=\"s5\">How long a treatment takes &mdash; and why that is also the price<\/h2>\n<p>The length depends on the size of the area and the density of the hair. An upper lip is a matter of a few minutes; full legs are the longest area.<\/p>\n<p>Because we price by treatment time rather than by &#8220;area&#8221;, the price reflects exactly what you need instead of one package for everyone: 15 minutes for &#8362;250 (which is also the minimum order), 30 minutes for &#8362;350, an hour for &#8362;550. Get an estimate for your own areas in the <a href=\"\/en\/laser-calculator\/\">price calculator<\/a>, and the full breakdown on the <a href=\"\/en\/laser-hair-removal-prices\/\">price list<\/a>.<\/p>\n<h2 id=\"s6\">Laser, IPL and electrolysis &mdash; what is the difference<\/h2>\n<p>IPL is not a laser. It is broad-spectrum light from a lamp, so its energy is less focused and less precisely adjustable. A laser emits a defined wavelength, and a system with several wavelengths covers more hair types and skin tones.<\/p>\n<p>Electrolysis works hair by hair and so is not practical for large areas, but it does work on white hair &mdash; exactly the case where laser is limited.<\/p>\n<h2 id=\"s7\">Who it is not suitable for<\/h2>\n<p>We treat from age 18 and up. Younger than that, hair is still affected by hormonal change, and a result achieved too early may not hold.<\/p>\n<p>We do not treat during pregnancy or breastfeeding; a series that started earlier can be continued after the birth. As for tanning &mdash; tanned is not a problem, burnt is. Usually that means three to four days after sun exposure, and the dermatoscope at the assessment decides.<\/p>\n<h2 id=\"s8\">What to do before and after<\/h2>\n<p>Before: shave &mdash; with a trimmer any time from right away up to a few hours before, with a razor about 24 hours in advance so the hair has time to come out &mdash; no waxing, no plucking, and arrive with clean skin and no creams. The full detail is in the <a href=\"\/en\/aftercare-guide\/\">before &amp; after guide<\/a>.<\/p>\n<p>After: 72 hours away from heat, friction and direct sun. What is normal, what is not and when to pick up the phone &mdash; in the same <a href=\"\/en\/aftercare-guide\/\">guide<\/a>.<\/p>\n<h2 id=\"s9\">Questions that keep coming up<\/h2>\n<h3>Does the laser damage the skin?<\/h3>\n<p>The energy is aimed at the melanin in the root and not at the skin itself, and the continuous cooling protects the top layer. The intensity is set at the assessment according to your skin tone, not on one setting for everyone.<\/p>\n<h3>Can you have laser in the summer?<\/h3>\n<p>Yes. What matters is the state of the skin on the day of the treatment, not the season. Burnt or peeling skin postpones a treatment; skin that is tanned and intact usually does not.<\/p>\n<h3>How long until you see something?<\/h3>\n<p>Shedding starts to show about one to three weeks after the first treatment. The cumulative change is usually felt after three to four treatments.<\/p>\n<h3>Do you have to stop shaving?<\/h3>\n<p>The opposite. Between treatments you carry on shaving as usual, and before each treatment you shave &mdash; with a trimmer from right away up to a few hours before, with a razor about 24 hours in advance so the hair has time to come out. What you must not do is pluck.<\/p>\n<p>Want to feel it before you decide? <a href=\"\/en\/free-laser-hair-removal-trial\/\">The trial session<\/a> is meant for exactly that.<\/p>\n<div class=\"oz-faq-ld\"><script type=\"application\/ld+json\" data-oz-faq=\"1\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"@id\":\"https:\/\/oz-clinic.co.il\/how-laser-hair-removal-works\/#faq\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the laser damage the skin?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The energy is aimed at the melanin in the root and not at the skin itself, and the continuous cooling protects the top layer. The intensity is set at the assessment according to your skin tone, not on one setting for everyone.\"}},{\"@type\":\"Question\",\"name\":\"Can you have laser in the summer?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. What matters is the state of the skin on the day of the treatment, not the season. Burnt or peeling skin postpones a treatment; skin that is tanned and intact usually does not.\"}},{\"@type\":\"Question\",\"name\":\"How long until you see something?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Shedding starts to show about one to three weeks after the first treatment. The cumulative change is usually felt after three to four treatments.\"}},{\"@type\":\"Question\",\"name\":\"Do you have to stop shaving?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The opposite. Between treatments you carry on shaving as usual, and before each treatment you shave - with a trimmer from right away up to a few hours before, with a razor about 24 hours in advance so the hair has time to come out. What you must not do is pluck.\"}}]}<\/script><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The short answer: how does laser hair removal work? The laser beam is absorbed by the melanin in the hair root, converted into heat, and disables the follicle. Only hairs in the active growth phase respond, which is why it takes a series of about 12 treatments in three stages rather than a single session. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":10497,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"two_page_speed":{"current_score":{"desktop_score":64,"desktop_tti":"1.8\u00a0","mobile_score":78,"mobile_tti":"3.9\u00a0","date":"23.08.2026 07:44:42 pm","status":"completed"}},"footnotes":""},"categories":[50],"tags":[],"class_list":["post-11512","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-laser-hair-removal"],"_links":{"self":[{"href":"https:\/\/oz-clinic.co.il\/en\/wp-json\/wp\/v2\/posts\/11512","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oz-clinic.co.il\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/oz-clinic.co.il\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/oz-clinic.co.il\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/oz-clinic.co.il\/en\/wp-json\/wp\/v2\/comments?post=11512"}],"version-history":[{"count":0,"href":"https:\/\/oz-clinic.co.il\/en\/wp-json\/wp\/v2\/posts\/11512\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oz-clinic.co.il\/en\/wp-json\/wp\/v2\/media\/10497"}],"wp:attachment":[{"href":"https:\/\/oz-clinic.co.il\/en\/wp-json\/wp\/v2\/media?parent=11512"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/oz-clinic.co.il\/en\/wp-json\/wp\/v2\/categories?post=11512"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/oz-clinic.co.il\/en\/wp-json\/wp\/v2\/tags?post=11512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}