{"id":6889,"date":"2026-05-29T14:32:21","date_gmt":"2026-05-29T12:32:21","guid":{"rendered":"https:\/\/xiaomoxuan.cz\/?page_id=6889"},"modified":"2026-05-29T14:32:21","modified_gmt":"2026-05-29T12:32:21","slug":"heat-protection-for-colour-treated-hair","status":"publish","type":"page","link":"https:\/\/xiaomoxuan.cz\/en\/expert-tips\/heat-protection-for-colour-treated-hair\/","title":{"rendered":"Heat protection for colour-treated hair"},"content":{"rendered":"<p><\/p>\n<article class=\"article-wrap\" itemscope itemtype=\"https:\/\/schema.org\/Article\">\n<section class=\"article-header\">\n<p class=\"article-lead\">Colour-treated hair and daily heat styling \u2014 a bad combination without the right protection. We explain exactly what happens to your colour under heat and how to stop it.<\/p>\n<\/section>\n<section>\n<nav class=\"toc\" aria-label=\"Article contents\">\n<ol>\n<li><a href=\"#chomu\">Why colour-treated hair is more vulnerable<\/a><\/li>\n<li><a href=\"#mekhanizm\">What heat does to your colour<\/a><\/li>\n<li><a href=\"#temperatura\">At what temperature does damage begin<\/a><\/li>\n<li><a href=\"#sklad\">What to look for in a heat protectant<\/a><\/li>\n<li><a href=\"#yak-nanosyty\">How to apply it correctly<\/a><\/li>\n<li><a href=\"#faq\">Frequently asked questions<\/a><\/li>\n<\/ol>\n<\/nav>\n<\/section>\n<section>\n<div class=\"featured-answer\" itemscope itemtype=\"https:\/\/schema.org\/DefinedTerm\">\n<h2>What is heat protection for colour-treated hair?<\/h2>\n<p itemprop=\"description\">\n    Heat protection for colour-treated hair is a product that forms a protective film on the surface of the hair shaft, preventing the cuticle scales from lifting under the influence of heat. This slows down pigment loss when using a hair dryer, curling iron, or flat iron, and helps maintain colour vibrancy between dyeing sessions.\n  <\/p>\n<\/div>\n<\/section>\n<section>\n<div class=\"article-body\" itemprop=\"articleBody\">\n<h2 id=\"chomu\">Why colour-treated hair is more vulnerable<\/h2>\n<p>Every time you colour your hair, the chemical process opens the cuticle \u2014 the outer protective layer of the hair shaft. The dye penetrates inside, but the hair&#8217;s structure is no longer as dense as it was before colouring.<\/p>\n<p>Colour-treated hair has <strong>increased porosity<\/strong>: the cuticle scales lie less flat, leaving micro-gaps between them. Through these gaps, hair loses both moisture and pigment more quickly \u2014 especially under heat.<\/p>\n<div class=\"callout callout--warn\">\n        <span class=\"callout__label\">Important<\/span><br \/>\n        <strong>The more often you colour your hair, the more porous its structure becomes.<\/strong> After 3\u20134 colour treatments without restorative care, the cuticle can be so open that the protective effect of heat products is reduced. A regular collagen mask helps to partially restore the density of the hair shaft.\n      <\/div>\n<\/p><\/div>\n<\/section>\n<section>\n<h2 id=\"mekhanizm\">What heat does to your colour<\/h2>\n<p>The mechanism is straightforward: heat expands the structure of the hair shaft. The cuticle scales lift, and the pigment \u2014 dye molecules inside the cortex \u2014 finds an exit. When the hair cools, the scales close again, but some pigment has already escaped and been washed away.<\/p>\n<p>This doesn&#8217;t happen all at once \u2014 it happens <strong>gradually with every styling session<\/strong>. That&#8217;s why hair &#8220;fades&#8221;: the colour doesn&#8217;t disappear suddenly, it simply becomes duller after each wash and each session with a hairdryer or curling iron.<\/p>\n<div class=\"callout callout--info\">\n      <span class=\"callout__label\">What this looks like in practice<\/span><br \/>\n      You&#8217;ve just coloured your hair a rich chestnut brown. Two weeks later you notice that the roots look darker than the ends \u2014 yet there&#8217;s no real regrowth yet. It&#8217;s not regrowth: the ends are simply losing pigment faster because they are older and more porous. Heat from a curling iron accelerates this process several times over.\n    <\/div>\n<\/section>\n<section>\n<h2 id=\"temperatura\">At what temperature does damage begin<\/h2>\n<p>Hair begins to alter its structure at <strong>150\u00b0C and above<\/strong>. Most styling tools operate well above this threshold:<\/p>\n<table class=\"compare-table\" aria-label=\"Styling tool temperatures\">\n<thead>\n<tr>\n<th>Tool<\/th>\n<th>Working temperature<\/th>\n<th>Risk to colour-treated hair<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Hairdryer (high setting)<\/td>\n<td>80\u2013120\u00b0C<\/td>\n<td class=\"td-mid\">Medium<\/td>\n<\/tr>\n<tr>\n<td>Curling iron<\/td>\n<td>150\u2013230\u00b0C<\/td>\n<td class=\"td-bad\">High<\/td>\n<\/tr>\n<tr>\n<td>Hair straightener<\/td>\n<td>180\u2013230\u00b0C<\/td>\n<td class=\"td-bad\">Very high<\/td>\n<\/tr>\n<tr>\n<td>Hot air brush<\/td>\n<td>100\u2013150\u00b0C<\/td>\n<td class=\"td-mid\">Medium<\/td>\n<\/tr>\n<tr>\n<td>Diffuser (low setting)<\/td>\n<td>60\u201380\u00b0C<\/td>\n<td class=\"td-good\">Low<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"callout callout--tip\">\n      <span class=\"callout__label\">Tip<\/span><br \/>\n      If you can&#8217;t give up your curling iron or straightener \u2014 lower the temperature to 160\u2013170\u00b0C and always use a heat protectant. The difference between 180\u00b0C and 160\u00b0C is noticeable for hair colour within just a few weeks.\n    <\/div>\n<\/section>\n<section>\n<h2 id=\"sklad\">What to look for in a heat protectant<\/h2>\n<p>Not all heat protectants are equally effective for colour-treated hair. There are a few key ingredients that genuinely make a difference:<\/p>\n<h3>Silicone polymers (dimethicone, cyclomethicone)<\/h3>\n<p>They form a thin film on the surface of the hair shaft that reflects heat and prevents the cuticle scales from lifting. This is the first line of defence when the hair comes into contact with a hot tool.<\/p>\n<h3>Hydrolysed collagen<\/h3>\n<p>It penetrates the micro-gaps of porous hair and temporarily &#8220;fills&#8221; them. This is especially important for colour-treated hair \u2014 a denser structure means the pigment escapes more slowly even when heat is applied.<\/p>\n<h3>Panthenol (pro-vitamin B5)<\/h3>\n<p>It hydrates and softens the hair shaft from within, reducing brittleness. Colour-treated hair often suffers from dryness \u2014 panthenol compensates for this effect.<\/p>\n<h3>Tea tree extract<\/h3>\n<p>It soothes the scalp, which can be irritated after colouring, and has mild antibacterial properties. In combination with collagen it creates a synergistic strengthening effect.<\/p>\n<\/section>\n<section>\n<div class=\"callout callout--gold\">\n      <span class=\"callout__label\">Watch out for<\/span><br \/>\n      Avoid products containing <strong>sulphates and parabens<\/strong> in conditioners and styling sprays. Sulphates open the cuticle, neutralising the protective effect of even a good heat protectant.\n    <\/div>\n<\/section>\n<section>\n<h2 id=\"yak-nanosyty\">How to apply heat protection correctly<\/h2>\n<p>Even a good product won&#8217;t deliver results if used incorrectly. Here is a step-by-step routine:<\/p>\n<ul class=\"step-list\">\n<li>\n<div class=\"step-content\"><strong>Wash your hair with a sulphate-free shampoo<\/strong><span>Sulphate shampoos open the cuticle \u2014 everything you apply afterwards is absorbed less effectively.<\/span><\/div>\n<\/li>\n<li>\n<div class=\"step-content\"><strong>Apply a mask or conditioner<\/strong><span>A collagen mask fills the porous structure of colour-treated hair. Leave it on for 5\u201310 minutes, then rinse with cool water \u2014 cold water closes the cuticle.<\/span><\/div>\n<\/li>\n<li>\n<div class=\"step-content\"><strong>Gently blot dry with a towel \u2014 don&#8217;t rub<\/strong><span>Rubbing with a towel mechanically damages the open cuticle scales. Gently press or wrap for 2\u20133 minutes.<\/span><\/div>\n<\/li>\n<li>\n<div class=\"step-content\"><strong>Apply the heat protection spray to damp hair<\/strong><span>Spray evenly from mid-length to the ends \u2014 these sections are the most porous and most vulnerable. The roots don&#8217;t need as much heat protection.<\/span><\/div>\n<\/li>\n<li>\n<div class=\"step-content\"><strong>Wait 1\u20132 minutes before styling<\/strong><span>Let the ingredients settle on the hair \u2014 don&#8217;t reach for the hairdryer straight after applying.<\/span><\/div>\n<\/li>\n<li>\n<div class=\"step-content\"><strong>Dry and style at the lowest possible temperature<\/strong><span>Heat protection reduces damage but does not eliminate it entirely. Lower temperature + protection = the best result for your colour.<\/span><\/div>\n<\/li>\n<\/ul>\n<\/section>\n<section>\n<div class=\"cta-container\">\n<h3>Silky Smooth by Xiaomoxuan<\/h3>\n<p>A leave-in conditioning spray with collagen and tea tree extract. Apply to damp or dry hair before styling \u2014 no weighing down. Suitable for colour-treated, brittle and chemically processed hair.<\/p>\n<div class=\"button-container\">\n        <a href=\"\/en\/produkt\/silky-smooth-xiaomoxuan-leave-in-conditioner-spray-2-pcs\/\" class=\"button-green\">View product<\/a><br \/>\n        <a href=\"\/en\/sklep\/\" class=\"button-white\">Full catalogue<\/a>\n      <\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"faq-section\" id=\"faq\" itemscope itemtype=\"https:\/\/schema.org\/FAQPage\">\n<h2>Frequently asked questions about heat protection<\/h2>\n<details class=\"faq-details\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary itemprop=\"name\">Do I need heat protection when using a hairdryer?<\/summary>\n<div class=\"faq-answer\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<p itemprop=\"text\">Yes. A hairdryer acts on a large portion of your hair for an extended period \u2014 especially if you dry it every day. Even moderate heat accumulates damage with daily use. Heat protection before blow-drying is a basic necessity, not an overreaction.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-details\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary itemprop=\"name\">How often should I apply heat protection?<\/summary>\n<div class=\"faq-answer\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<p itemprop=\"text\">Every time before any heat exposure \u2014 hairdryer, straightener, curling iron. If you style your hair every day, apply protection every day. If 2\u20133 times a week, apply it accordingly.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-details\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary itemprop=\"name\">Is heat protection suitable for oily scalp types?<\/summary>\n<div class=\"faq-answer\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<p itemprop=\"text\">Yes. Apply the product only to the lengths, keeping 5\u201310 cm away from the roots. A light spray texture does not weigh hair down or trigger oiliness \u2014 just make sure not to apply too much.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-details\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary itemprop=\"name\">Can heat protection be applied to dry hair?<\/summary>\n<div class=\"faq-answer\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<p itemprop=\"text\">Technically yes, but the effectiveness is lower. On damp hair the cuticle is open and absorbs active ingredients better. Applying to dry hair before a curling iron is better than nothing, but ideally apply to slightly damp hair before blow-drying.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-details\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary itemprop=\"name\">Does heat protection weigh hair down?<\/summary>\n<div class=\"faq-answer\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<p itemprop=\"text\">If you feel any heaviness \u2014 it&#8217;s usually a matter of quantity, not the product itself. Start with the minimum amount and increase as needed. Light spray formulas are barely noticeable on the hair.<\/p>\n<\/p><\/div>\n<\/details>\n<\/section>\n<section>\n<p class=\"related-title\"><strong>Read also<\/strong><\/p>\n<div class=\"related-links\">\n      <a href=\"\/en\/termozahyst-dlya-volossya\/\">Heat protection for hair: the essentials for every hair type<\/a><br \/>\n      <a href=\"\/en\/blog\/7-signs-your-hair-is-dehydrated\/\">7 signs your hair needs hydration<\/a><br \/>\n      <a href=\"\/en\/blog\/jak-kolagen-a-cajovnik-v-produktech-xiaomoxuan-posiluji-a-chrani-vlasy\/\">Collagen and tea tree: how they work in synergy<\/a><br \/>\n      <a href=\"\/en\/blog\/5-common-hair-washing-mistakes\/\">5 hair-washing mistakes you&#8217;re probably making<\/a>\n    <\/div>\n<\/section>\n<\/article>\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Colour-treated hair and daily heat styling \u2014 a bad combination without the right protection. We explain exactly what happens to&#8230;<\/p>\n","protected":false},"author":2,"featured_media":6928,"parent":6735,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-6889","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/xiaomoxuan.cz\/en\/wp-json\/wp\/v2\/pages\/6889","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xiaomoxuan.cz\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/xiaomoxuan.cz\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/xiaomoxuan.cz\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/xiaomoxuan.cz\/en\/wp-json\/wp\/v2\/comments?post=6889"}],"version-history":[{"count":30,"href":"https:\/\/xiaomoxuan.cz\/en\/wp-json\/wp\/v2\/pages\/6889\/revisions"}],"predecessor-version":[{"id":6969,"href":"https:\/\/xiaomoxuan.cz\/en\/wp-json\/wp\/v2\/pages\/6889\/revisions\/6969"}],"up":[{"embeddable":true,"href":"https:\/\/xiaomoxuan.cz\/en\/wp-json\/wp\/v2\/pages\/6735"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xiaomoxuan.cz\/en\/wp-json\/wp\/v2\/media\/6928"}],"wp:attachment":[{"href":"https:\/\/xiaomoxuan.cz\/en\/wp-json\/wp\/v2\/media?parent=6889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}