{"id":135993,"date":"2026-11-02T09:00:00","date_gmt":"2026-11-02T08:00:00","guid":{"rendered":"https:\/\/kisuihair.com\/?p=135993"},"modified":"2026-11-02T09:00:00","modified_gmt":"2026-11-02T08:00:00","slug":"refresh-hair-colour-between-appointments","status":"publish","type":"post","link":"https:\/\/kisuihair.com\/es\/refresh-hair-colour-between-appointments\/","title":{"rendered":"How to Refresh Hair Colour Between Appointments"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"135993\" class=\"elementor elementor-135993 elementor-bc-flex-widget\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-761b564 e-con e-atomic-element e-flexbox-base e-default-div e-6d2478d\" data-id=\"761b564\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"761b564\">\n    \t\t<div class=\"elementor-element elementor-element-b723eeb elementor-widget elementor-widget-html\" data-id=\"b723eeb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<!-- Ki.Sui editorial article 07 | English URLs verified 23 October 2026. 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.ks-photo,.kisui-story .ks-split.ks-image-left .ks-photo{order:0}.kisui-story .ks-split.ks-image-right .ks-text,.kisui-story .ks-split.ks-image-left .ks-text{order:1}.kisui-story .ks-photo.ks-portrait{max-width:100%}.kisui-story .ks-photo img{aspect-ratio:4\/4.2}.kisui-story .ks-causes{grid-template-columns:1fr;gap:16px}.kisui-story .ks-quote{margin:48px auto}.kisui-story .ks-wide-photo img{aspect-ratio:1.2\/1}.kisui-story .ks-remedies th,.kisui-story .ks-remedies td{padding:13px 10px;font-size:12px}.kisui-story .ks-remedies td:first-child{width:35%}.kisui-story .ks-steps li{padding-left:40px}.kisui-story .ks-cta{margin-top:32px}.kisui-story .ks-footer-gap{height:20px}}\n@media(prefers-reduced-motion:reduce){.kisui-story *{transition:none!important}}\n<\/style>\n<article class=\"kisui-story\">\n<div class=\"translation-block ks-translation-group\" data-ks-section=\"1\"><header class=\"ks-intro ks-container\">\n<p class=\"ks-kicker\">Ki.Sui Journal \/ Coloured Hair<\/p>\n<h1>How to Refresh Hair Colour Between Appointments<\/h1>\n<p class=\"ks-deck\">Three weeks after the salon, your blonde is turning yellow and your brunette looks flat. It is not always a bad colour job: colour wears away with water, light and heat. Here is why it happens, what to do for your shade and how to refresh hair colour so it lasts longer.<\/p>\n<div class=\"ks-summary\"><p><b>In short.<\/b> Colour fades mainly through washing, which dissolves the dye, and through sun and heat. To refresh it, <strong>wash less often<\/strong>, <strong>limit heat<\/strong> and once a week use a <strong>colour-depositing mask that suits your shade<\/strong>: violet or black for blonde that turns yellow, a mask for brown tones when brunette looks dull.<\/p><\/div>\n<\/header><section class=\"ks-section\"><div class=\"ks-container ks-split ks-image-right\">\n<div class=\"ks-text\"><p class=\"ks-overline\">01 \/ Why colour fades<\/p><h2>Why Hair Colour Fades Between Appointments<\/h2>\n<p>Most of the colour you lose goes down the drain. Dye is lost mainly because it dissolves in water while you shampoo (Zhou et al., 2009). Ammonia-free colours, known as demi-permanent, usually last 10\u201315 washes, and sometimes fewer (Gavazzoni Dias, 2015).<\/p>\n<p>Washing is the main culprit, but not the only one. Sun, heat and even the swimming pool play their part. And sometimes what looks like fading is not fading at all.<\/p><\/div>\n<figure class=\"ks-photo ks-portrait\"><img fetchpriority=\"high\" alt=\"Smiling woman with long, wavy golden blonde hair against a lilac background\" decoding=\"async\" height=\"1900\" loading=\"eager\" src=\"https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-blog-07-onde-lilla.webp\" width=\"1266\"\/><figcaption>Lighter shades are the most sensitive to sunlight.<\/figcaption><\/figure>\n<\/div><\/section><\/div>\n\n<div class=\"translation-block ks-translation-group\" data-ks-section=\"2\"><section class=\"ks-section\"><div class=\"ks-container\"><p class=\"ks-overline\">02 \/ The other culprits<\/p><h2>Sun, Heat, Pools and Regrowth<\/h2>\n<div class=\"ks-causes\">\n<div class=\"ks-cause\"><span class=\"ks-number\">01<\/span><h3>The Sun<\/h3><p>Light changes the colour of all hair, especially light hair, and the main culprit is UVA radiation (Nogueira and Joekes, 2004). In the lab, dyed tresses lost far more colour when sun and washing were combined. White or bleached hair that had then been dyed lost much more than dyed brown hair (Locke and Jachowicz, 2005). In other words: in summer, and on grey or bleached hair, colour does not last as long.<\/p><\/div>\n<div class=\"ks-cause\"><span class=\"ks-number\">02<\/span><h3>Heat from Straighteners and Hairdryers<\/h3><p>Intense heat breaks down tryptophan, an amino acid in the hair. The result is white hair that turns yellow and bleached blonde that darkens (Gavazzoni Dias, 2015).<\/p><!-- FUTURE INTERNAL LINK: Article 03, daily straightener use. Add after publication. --><\/div>\n<div class=\"ks-cause\"><span class=\"ks-number\">03<\/span><h3>The Swimming Pool<\/h3><p>In light hair that has already been treated, copper from the water can build up and, in poorly maintained pools, turn it green (Lomel\u00ed-Legaspi et al., 2024).<\/p><\/div>\n<div class=\"ks-cause\"><span class=\"ks-number\">04<\/span><h3>Regrowth<\/h3><p>If you can see white hair at the roots after two weeks, your colour is not washing out: that is new hair growing (Gavazzoni Dias, 2015). What you need then is a root touch-up at the salon, not a mask.<\/p><\/div>\n<\/div><\/div><\/section><aside class=\"ks-quote ks-container\"><p>When the toner wears off, <em>the yellow shows through again.<\/em><\/p><\/aside><section class=\"ks-section\"><div class=\"ks-container ks-split ks-image-left\">\n<figure class=\"ks-photo ks-portrait\"><img loading=\"lazy\" alt=\"Ki.Sui Colour Refresh Mask bottles in Platinum Blonde Care, Pearly Blonde Care and Brunette Illuminated Care, with a Pearly Blonde Care refill pouch\" decoding=\"async\" height=\"1900\" src=\"https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-blog-07-colour-refresh.webp\" width=\"1266\"\/><figcaption>The three Colour Refresh Masks: Platinum, Pearly and Brunette.<\/figcaption><\/figure>\n<div class=\"ks-text\"><p class=\"ks-overline\">03 \/ Know your shade<\/p><h2>Why Blonde Turns Yellow (and Brunette Turns Brassy)<\/h2><p>Natural hair colour comes from two pigments: eumelanin, from black to brown, and pheomelanin, from reddish-brown to yellow. Brown and blonde hair also contain a small amount of pheomelanin (Ito and Wakamatsu, 2011). Lightening means oxidising and breaking down these natural pigments (Fernandes et al., 2023).<\/p><p>We see it in the salon every day. As the brown goes, a warm base comes through: orange first, then yellow. That is why highlights are almost always followed by a toner, and why the yellow comes back once the toner wears off. On brown hair, the coppery tones you never asked for are often that same warm base, resurfacing as the colour fades.<\/p><\/div>\n<\/div><\/section><\/div>\n\n<div class=\"translation-block ks-translation-group\" data-ks-section=\"3\"><section class=\"ks-section\"><div class=\"ks-container ks-copy\"><p class=\"ks-overline\">04 \/ Colour theory<\/p><h2>How Does a Purple Mask Work?<\/h2>\n<p>It is colour theory. On the colour wheel, violet sits opposite yellow and blue sits opposite orange. Lay two opposite colours over each other and they cancel each other out. A mask with violet pigments leaves a veil of colour that tones down the yellow.<\/p>\n<p>It does not lighten your hair and it does not repair bleach damage: it corrects the tone. We have not found independent studies measuring its effect. The basis is colour theory and salon experience.<\/p>\n<\/div><\/section><section class=\"ks-section\"><div class=\"ks-container\"><p class=\"ks-overline\">05 \/ Shade by shade<\/p><h2>How to Refresh Hair Colour, Shade by Shade<\/h2>\n<table class=\"ks-remedies\"><thead><tr><th scope=\"col\">Your colour<\/th><th scope=\"col\">Likely cause<\/th><th scope=\"col\">What to do<\/th><\/tr><\/thead><tbody>\n<tr><td>Blonde or highlights turning yellow<\/td><td>The toner has worn off; sun<\/td><td>Correct the tone once a week. <a href=\"https:\/\/kisuihair.com\/es\/pearly-blonde-care\/\"><strong>Pearly Blonde Care<\/strong><\/a> is a violet mask that neutralises yellow tones, for a pearly beige blonde.<\/td><\/tr>\n<tr><td>Platinum, cool blondes, grey hair turning yellow<\/td><td>The toner has worn off; heat<\/td><td>Correct the tone and cut down on heat. <a href=\"https:\/\/kisuihair.com\/es\/platinum-blonde-care\/\"><strong>Platinum Blonde Care<\/strong><\/a> is a black anti-yellow mask for cool tones, platinum and naturally grey hair.<\/td><\/tr>\n<tr><td>Dull brunette, highlights gone<\/td><td>Washing and sun stripping the colour<\/td><td>Revive the tone between colour appointments. <a href=\"https:\/\/kisuihair.com\/es\/brunette-illuminated-care\/\"><strong>Brunette Illuminated Care<\/strong><\/a> is a mask for brunettes that enhances and intensifies brown tones.<\/td><\/tr>\n<tr><td>Brown hair with orange or coppery tones you do not want<\/td><td>The warm base coming through<\/td><td>A toner with blue pigments, applied by your colourist. No Ki.Sui mask is designed for this.<\/td><\/tr>\n<\/tbody><\/table>\n<p class=\"ks-copy\" style=\"margin-top:32px\">All three masks are used the same way, as their product pages explain: once a week, after shampooing, leave on for 15 minutes, then rinse. They are semi-permanent colour masks, designed to maintain your colour between salon visits, which is why you keep using them. You will find them in the <a href=\"https:\/\/kisuihair.com\/es\/colour-refresh-mask\/\"><strong>Colour Refresh Mask<\/strong><\/a> collection and among our <a href=\"https:\/\/kisuihair.com\/es\/cabello-tenido-2\/\"><strong>products for coloured hair<\/strong><\/a>.<\/p><!-- FUTURE INTERNAL LINK: Article 06, mask frequency. Add after the English slug is published. -->\n<\/div><\/section><section class=\"ks-section\"><div class=\"ks-container\"><p class=\"ks-overline\">06 \/ Make it last<\/p><div class=\"ks-split\"><div class=\"ks-text\"><h2>How to Make Your Colour Last Longer<\/h2><p>Four habits that help your colour hold between salon visits.<\/p><\/div><div><\/div><\/div>\n<ol class=\"ks-steps ks-copy\">\n<li><strong>Wash less often.<\/strong><p>Every shampoo takes a little colour with it (Zhou et al., 2009). There is no right frequency for everyone, but if your scalp allows it, add one more day between washes.<\/p><\/li>\n<li><strong>Choose a gentle shampoo, without expecting miracles.<\/strong><p>Many colourists recommend sulphate-free formulas, but there are no published analyses of how well they work or whether they are any gentler (Gavazzoni Dias, 2015). How often you wash matters more. Lukewarm water is another popular tip, but we have not found studies that measure it.<\/p><\/li>\n<li><strong>Protect it from the sun.<\/strong><p>Sun and washing together are the combination that strips the most colour (Locke and Jachowicz, 2005). In summer, wear a hat.<\/p><\/li>\n<li><strong>Use less heat.<\/strong><p>Turn down the temperature on your straighteners and hairdryer, especially on grey and bleached hair.<\/p><\/li>\n<\/ol>\n<p class=\"ks-copy\">Colouring and bleaching also make hair more porous and prone to frizz. We cover this in <a href=\"https:\/\/kisuihair.com\/es\/frizzy-hair-causes-and-remedies-that-really-work\/\"><strong>Frizzy Hair: Causes and Remedies That Really Work<\/strong><\/a>.<\/p>\n<figure class=\"ks-wide-photo\"><img loading=\"lazy\" alt=\"Ki.Sui hair care range on a shelf: Soft Cleaning shampoo, Hair Serum Oil Elixir, Illuminating Shine, Styling 10, Let It Bloom and Silky Movement\" decoding=\"async\" height=\"1042\" src=\"https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-blog-07-gamma.webp\" width=\"1500\"\/><figcaption>The wider Ki.Sui range, from cleansing to finishing.<\/figcaption><\/figure>\n<\/div><\/section><\/div>\n\n<div class=\"translation-block ks-translation-group\" data-ks-section=\"4\"><section class=\"ks-section\"><div class=\"ks-container\"><div class=\"ks-cta\"><p class=\"ks-overline\">The right mask for you<\/p><h2>Not Sure Which Mask Suits Your Colour?<\/h2><p>Answer a few questions about your hair and scalp to discover a personalised Ki.Sui routine.<\/p><a class=\"ks-button\" href=\"https:\/\/kisuihair.com\/es\/diagnostico-capilar\/\">Take the Free Hair Diagnosis \u2192<\/a><\/div><\/div><\/section><section class=\"ks-section\"><div class=\"ks-container ks-faq\"><p class=\"ks-overline\">07 \/ FAQs<\/p><h2>Frequently Asked Questions About Faded Hair Colour<\/h2>\n<div class=\"ks-faq-item\"><h3>How often should I use an anti-yellow mask?<\/h3><p>For Ki.Sui masks, the guidance is once a week, after shampooing, left on for 15 minutes. If your blonde is very light or has been bleached several times, try it first on a hidden strand. Bleached hair absorbs dyes more quickly.<\/p><\/div>\n<div class=\"ks-faq-item\"><h3>Does a purple mask work on brown hair?<\/h3><p>Not much, as a rule. Violet neutralises yellow, which is rarely the problem on brown hair: brunette that fades tends to go orange or coppery instead. To revive it, you need a mask designed for brown tones; to remove orange, a blue toner applied by your colourist.<\/p><\/div>\n<div class=\"ks-faq-item\"><h3>Why does my hair colour fade so quickly?<\/h3><p>Usually because frequent washing, sun and heat add up. Demi-permanent colours generally last 10\u201315 washes. If your roots are a different colour, that is regrowth, not colour washing out.<\/p><\/div>\n<div class=\"ks-faq-item\"><h3>Why does white hair turn yellow?<\/h3><p>One documented cause is heat from straighteners and hairdryers, which breaks down tryptophan in the hair and turns white hair yellow. The evidence on sun is less clear: in one study, white hair exposed to UV became less yellow, not more (Nogueira et al., 2007).<\/p><\/div>\n<div class=\"ks-sources\"><h2>Research &amp; Further Reading<\/h2><ol>\n<li>Zhou et al. (2009). <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/19450422\/\" rel=\"noopener noreferrer\" target=\"_blank\">Protection of oxidative hair color fading from shampoo washing by hydrophobically modified cationic polymers.<\/a> <em>Journal of Cosmetic Science<\/em>, 60(2), 217\u2013238.<\/li>\n<li>Locke and Jachowicz (2005). <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/16538296\/\" rel=\"noopener noreferrer\" target=\"_blank\">Fading of artificial hair color and its prevention by photofilters.<\/a> <em>Journal of Cosmetic Science<\/em>, 56(6), 407\u2013425.<\/li>\n<li>Nogueira and Joekes (2004). <a href=\"https:\/\/doi.org\/10.1016\/j.jphotobiol.2004.03.001\" rel=\"noopener noreferrer\" target=\"_blank\">Hair color changes and protein damage caused by ultraviolet radiation.<\/a> <em>Journal of Photochemistry and Photobiology B<\/em>, 74(2\u20133), 109\u2013117.<\/li>\n<li>Nogueira et al. (2007). <a href=\"https:\/\/doi.org\/10.1016\/j.jphotobiol.2007.05.005\" rel=\"noopener noreferrer\" target=\"_blank\">Photo yellowing of human hair.<\/a> <em>Journal of Photochemistry and Photobiology B<\/em>, 88(2\u20133), 119\u2013125.<\/li>\n<li>Gavazzoni Dias (2015). <a href=\"https:\/\/doi.org\/10.4103\/0974-7753.153450\" rel=\"noopener noreferrer\" target=\"_blank\">Hair cosmetics: an overview.<\/a> <em>International Journal of Trichology<\/em>, 7(1), 2\u201315.<\/li>\n<li>Ito and Wakamatsu (2011). <a href=\"https:\/\/doi.org\/10.1111\/j.1468-3083.2011.04278.x\" rel=\"noopener noreferrer\" target=\"_blank\">Diversity of human hair pigmentation as studied by chemical analysis of eumelanin and pheomelanin.<\/a> <em>Journal of the European Academy of Dermatology and Venereology<\/em>, 25(12), 1369\u20131380.<\/li>\n<li>Fernandes, Cavaco-Paulo and Matam\u00e1 (2023). <a href=\"https:\/\/doi.org\/10.3390\/biology12020290\" rel=\"noopener noreferrer\" target=\"_blank\">A Comprehensive Review of Mammalian Pigmentation: Paving the Way for Innovative Hair Colour-Changing Cosmetics.<\/a> <em>Biology<\/em>, 12(2), 290.<\/li>\n<li>Lomel\u00ed-Legaspi et al. (2024). <a href=\"https:\/\/doi.org\/10.1159\/000539438\" rel=\"noopener noreferrer\" target=\"_blank\">The Greening of Hair: A Unique Case of Chlorotrichosis and Its Management.<\/a> <em>Skin Appendage Disorders<\/em>, 10(6), 528\u2013531.<\/li>\n<\/ol><\/div>\n<\/div><\/section><div class=\"ks-footer-gap\"><\/div><\/div>\n\n<\/article>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-623a602 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"623a602\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-10975ab\" data-id=\"10975ab\" data-element_type=\"column\" 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srcset=\"https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-colore-spento-come-ravvivarlo.jpg 1600w, https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-colore-spento-come-ravvivarlo-300x169.jpg 300w, https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-colore-spento-come-ravvivarlo-1024x576.jpg 1024w, https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-colore-spento-come-ravvivarlo-768x432.jpg 768w, https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-colore-spento-come-ravvivarlo-1536x864.jpg 1536w, https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-colore-spento-come-ravvivarlo-18x10.jpg 18w, https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-colore-spento-come-ravvivarlo-600x338.jpg 600w\" sizes=\"(max-width: 1600px) 100vw, 1600px\" \/><\/div><\/a>\n\t\t\t\t<div class=\"elementor-post__badge\">Blog general<\/div>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h3 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category-blog-general category-blog-general-es category-blog-generale category-recent-news-particulares category-recent-news-customer\" role=\"listitem\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/kisuihair.com\/es\/how-often-to-use-a-hair-mask\/\" tabindex=\"-1\"><div class=\"elementor-post__thumbnail\"><img decoding=\"async\" width=\"1600\" height=\"900\" src=\"https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-maschera-capelli-quante-volte.jpg\" class=\"attachment-full size-full wp-image-135986\" alt=\"How Often to Use a Hair Mask: What Your Hair Really Needs\" srcset=\"https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-maschera-capelli-quante-volte.jpg 1600w, https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-maschera-capelli-quante-volte-300x169.jpg 300w, https:\/\/kisuihair.com\/wp-content\/uploads\/2026\/10\/kisui-maschera-capelli-quante-volte-1024x576.jpg 1024w, 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