How long to leave ion semi permanent hair dye in

Timing is 30 minutes for standard color application; 45 minutes for maximum gray coverage and for high-lift shades. Typically, with permanent color, the first 15 minutes provide time for the peroxide and ammonia to open the cuticle and penetrate into the cortex to lighten natural pigment. The final 15 – 30 minutes are for additional ...

How long to leave ion semi permanent hair dye in. ion Color Brilliance Permanent Creme Hair Color has a palette of luxurious shades. The advanced ionic technology utilizes pure ionic micro pigments for deeper, more intense color deposit. ion Color Brilliance penetrates the cuticle layer of the hair and lodges in the cortex, ensuring 100% flawless gray coverage.

Hair dye should be left in for 30 to 45 minutes. Observe the directions on the package. The ammonia and peroxide in hair dye penetrate deeper into the hair structure after 30 minutes, altering the pigment. Depending on the length, type, and color of the hair, the process might take anywhere from 30 minutes to three hours.

ion Color Brilliance Intensive Shine Demi Permanent Creme Hair Color is a state-of-the-art, European Ionic Formula that is a luxurious, long-lasting, deposit-only hair color without ammonia. This hair color covers and blends gray hair up to 100% without lifting the hair's natural pigment.Semi-permanent hair dye uses smaller molecules that do not penetrate the hair shaft as deeply and wash out after a few shampoos. ... If the dye has been sitting for too long, the components may separate, causing the dye to be ineffective. To check for separation, you can gently shake the bottle and observe if the components mix well. ...For most people, semi-permanent hair color will last anywhere from 8-10 shampoos; as is the case with any type of color service, this estimate is also dependent on the hair products you use and your usual styling routine. "At Davines, our semi-permanent color is Finest Pigments. Our demi-permanent color is View, and the Alchemic family is ...Step 2: Apply The Dye. Next, wearing the enclosed gloves, apply the L’Oréal Paris Colorista Semi-Permanent Hair Color onto desired areas as directed in the instruction sheet. Leave the dye to sit for about 15 to 30 minutes, and then rinse out and style as usual. No matter which type of semi-permanent hair dye you use, make sure to carefully ...ion Color Brilliance Semi-Permanent Brights are hi-fashion hair color shades designed to give vivid boldly intense results. In 20 to 40 minutes ion Color Brilliance Brights deposits color on pre-bleached natural or color treated hair. ion Color Brilliance Brights can be applied to pre-lightened hair and natural or colored hair.

Demi-permanent dye will last up to 20 washes. "This is a low-level peroxide dye and should be done every 6 to 8 weeks ," Mitchell says. Demi-permanent dye deposits color, and it cannot lift hair color, Spearmen explains.You can only reuse dye that hasn’t been mixed with a developer. If you’ve opened hair dye and haven’t mixed it with anything yet, you’re 100% okay to close it again and reuse it later. Permanent and demi-permanent dyes are the only dye types that require mixing before application. Once you mix the dye with the developer, it’s no ...Demi-permanent hair dye is meant only to penetrate lightly into your hair shaft. Such hair dye can be effective within 10 to 30 minutes, and the color would remain for up to 20 hair washes. Semi Permanent Hair Dye. Semi-permanent hair dye usually refers to the semi-natural hair dyes that you use. It doesn’t contain strong chemicals.Demi-permanent is similar as it eventually washes out but won't fade nearly as fast. According to cosmetic chemist Kelly Dobos, demi-permanent color is the perfect middle option for those wanting a change without the huge commitment (via Allure ). Using a demi-permanent dye will leave your hair damage-free and will last for about 24 hair washes.ion Color Brilliance Semi-Permanent Brights are hi-fashion hair color shades designed to give vivid boldly intense results. In 20 to 40 minutes ion Color Brilliance Brights deposits color on pre-bleached natural or color treated hair. ion Color Brilliance Brights can be applied to pre-lightened hair and natural or colored hair.In general, never leave a hair dye in your hair for less than 30 minutes and more than 45 minutes due to the possible hair damage and undesired colors. This time will depend on lots of factors. Brand of the dye you are …Jul 3, 2020 ... ION COLOR BRILLIANCE RED FROM THE BRIGHTS COLLECTION ON PREVIOUSLY DYED HAIR. NO DEVELOPER!!! I DYED MY HAIR SOME MONTHS BEFORE WITH THE ...How long you leave Punky color in your hair depends on the color you are using and the desired effect. Most colors require at least 30 minutes to work, but some may need only 10 minutes. ... It is a semi-permanent hair dye, which means that it will last for a few weeks or months, depending on how often it is washed.

How to Care For Semi-Permanent Hair Color. CanaléCleanse Shampoo$39.00. Shop. Ozel says the care of permanent and semi-permanent color is “just the same. Make sure you have a shampoo and conditioner that works for your hair and do deep treatments when needed.”. Canalé stresses the importance of color-safe formulas.Shop for Premium Natural Semi Permanent Hair Color from iroiro at Sally Beauty. Most vibrant and long-lasting natural color. ... Iroiro is a 100% vegan and cruelty-free semi-permanent hair color. Most vibrant and long-lasting, iroiro color proves that natural does not mean color will fade quickly. ... Leave color in hair for 30 minutes or ...Here are the steps for applying ion hair dye: Start by mixing the dye according to the instructions on the package. Section your hair and start applying the dye to the roots. Be sure to use a brush or applicator for even coverage. Let the …Hair washing with cold water of hot water. Type of shampoo you will use. Your frequency of visits to the swimming pool. So let's come to hair type and quality first. If you have healthy and strong hair, the semi-permanent hair color will only color the shaft, which means it will stay for 6-8 weeks.Overall, the reviews suggest that Ion Color Brilliance semi-permanent dye is a good choice for those looking for a temporary hair color that lasts longer than other semi-permanent dyes. While there may be some issues with bleeding and unexpected color results, most users seem to have a positive experience with the product.Sep 19, 2022 · How long do I leave Ion color brilliance in my hair? When it comes to hair color, there are a lot of variables to consider. One of the most important is how long to leave the color in your hair. With Ion color brilliance, there are a few things to keep in mind. The first consideration is the type of color you’re using.

Marks marine pharmacy ozempic.

Avoid Hair Damage: Timing Your Permanent Hair Dye Properly • Hair Dye Timing Tips • Learn why leaving permanent hair dye in too long can be damaging and …How Long Does Ion Semi-Permanent Last? You can expect ion semi-permanent hair to last about 4-6 weeks. But the color longevity depends on how often you wash your hair. The more you wash, the quicker it will fade. The less you wash, the slower it will fade. Pros and Cons of Using Ion Semi-Permanent DyeHow long should you leave ion semi-permanent hair color? 20 to 40 minutes After Pre-Lightening: Shampoo with ion(TM) Shampoo. Dry the hair. ... No matter which type of semi-permanent hair dye you use, make sure to carefully follow all directions. Do you shampoo after semi-permanent color? 1. After applying fresh color, wait at least 72 hours ...Find out how long ion semi permanent hair dye lasts, how to maintain its vibrancy, and what factors affect its longevity. ... Apply to hair and leave on for 20 minutes before rinsing out. Color Remover: Strong: Follow the instructions on the product carefully. Usually involves mixing ingredients and applying to hair for a specific amount of ...

Step 3: Pre-Coloring Hair Preparation. For best results, prepare your hair before applying the semi-permanent color. Wash your hair 24-48 hours before the application, using a sulfate-free shampoo to avoid stripping away natural oils. Dry your hair thoroughly before moving on to the next step. Wash hair.ion Color Brilliance Intensive Shine Demi Permanent Creme Hair Color is a state-of-the-art, European Ionic Formula that is a luxurious, long-lasting, deposit-only hair color without …Always start by reading the instructions on the color box or tube. ion permanent creme hair dyes are typically mixed 1:1 with 10, 20, or 30 volume ion creme developer. Their vividpermanent gel dyes require 20 or 30 volume ion creme developer at a 1:2 mixing ratio. Higher lifting ion high lift blonde cremes may call for 30 or 40 volume …The first thing you should know is that mixing dye with conditioner only works with semi-permanent hair dye. Not only will conditioner interfere with the developer needed for permanent dye, but adding it to your dye mix will lead to your color applying unevenly. ... Read your hair dye instructions and leave the color in your hair for as long as ...So, it does nothing more after that time limit. When you use a hair dye with developer, it should be shampooed after rinsing to remove any remaining peroxide residue. Although you can use a color-safe, sulfate-free shampoo to minimize fading, and use lukewarm or cool water when rinsing the dye out. This will help seal the cuticle and lock-in color.For my just-above-shoulder-length hair, I only needed to use one bottle to achieve the desired color, but if your hair is longer than mine, you may have to use two. I bought two 8 oz bottles of 20-volume developer to use with this lightener, and it ended up being the right amount, as I only needed about 10.5 oz of developer for a 1:1 mixing ratio.Permanent dye should be left on for 25-45 minutes, while semi-permanent dye requires 15-30 minutes. To avoid damage from heat styling and over-washing, use gentle products specifically designed for colored hair protection. Maximize your results by understanding the type of dye you’re using and its ingredients.Semi-permanent color lasts around 3-4 weeks. Demi-permanent color lasts up to 6 weeks. When it comes to Semi-Permanent vs Demi-Permanent hair color, there are a few key differences to keep in mind. First, semi-permanent color is typically gentler on the hair and doesn't penetrate the hair shaft as deeply. This means that semi-permanent color ...Step #5: Wait and Rinse. Once your strands are fully coated, wait the allotted time for your hair color to develop (set a timer so that you're not guessing). When time is up, rinse your hair until the water runs clear. You don't need to wash with shampoo unless the hair dye you're using instructs you to—most will tell you to wait.

Standard processing time is 10-40 minutes at room temperature and 10-15 minutes with heat. After processing, rinse hair thoroughly until the water runs clear. …

Guidelines for Different Hair Dye Types. Each type of hair dye has its own set of guidelines: Permanent Dye: On average, it should be left in the hair for about 30-45 minutes. However, this can vary based on the brand, your hair type, and the desired shade. Semi-Permanent Dye: These usually need to stay in the hair for about 15-30 minutes.Dyes must be left in the hair for about 30-45 minutes. The hair dye wishes 30 minutes for the ammonia and peroxide to work their way into the hair cuticle to alternate the hair’s herbal pigment. The ultimate 15 minutes are for the dye to wholly advance and permeate the hair. Most hair dyes, if no longer all, have directions written on the ...Apply the color to the roots of one section at a time, using your fingers or a brush. Be sure to apply the color evenly and avoid getting it on your scalp. Leave the color on for the amount of time specified on the tube, then rinse it out thoroughly. Ion permanent creme hair color is available in light blonde, dark blonde, light brown, dark ...Apr 26, 2016 ... Learn how to color your hair with ion™ Color Brilliance™ Permanent Creme Hair Color! The ion™ Color Brilliance™ palette consists of 47 rich, ...Paraphenylenediamine (PPD) is a chemical substance that is widely used as a permanent hair dye. PPD is used in hair dye because it is a permanent dye that gives a natural look, and the dyed hair can also be shampooed or permed without losing its colour. The base PPD is colourless and requires oxygen for it to become a dye, thus PPD hair dyes ...4. Put on a plastic cap and wait at least 30 minutes. Create a pile of your dyed hair on top of your head, and put on a plastic cap. Let the dye soak into your hair for at least 30 minutes, though you can leave it on longer if desired. [11] If your hair doesn't absorb dye well, leave the dye in for at least an hour.Oct 16, 2023 · Even if your hair is as shiny as a brand-new penny, you might also opt for semi-permanent hair color if you're dipping your toe into the hair-coloring pool for the first time. It's a lower commitment option for those who aren't fully ready to embrace the world of bi-monthly (or more) touch-ups. Semi-permanent hair dye typically lasts about six ...

Best lcp max holster.

Oriellys okmulgee.

When it comes to coloring your hair, many people are concerned about the potential harmful effects of using hair dyes that contain ingredients like PPD (paraphenylenediamine) and a...Demi-permanent hair color is ammonia-free, so its color molecules get under the outer cuticle of the hair shaft but, unlike permanent dye, doesn't penetrate the strand. Instead, they wrap around the hair's cuticle, creating a coating of color that's gradually washed away. Think of demi-permanent hair dye as a lip stain.We would like to show you a description here but the site won't allow us.Demipermanent hair dye isn't like semi or even permanent hair dye. Hairstylists and a cosmetic chemist explain exactly what it is, how long it lasts, and the best products to buy.What Happens If You Leave Ion Hair Dye on Too Long? Ion hair dye is formulated to work within a specific timeframe, as indicated in the instructions. If you leave it on for longer …Semi-Permanent Hair Dye. Characteristics: Semi-permanent hair dye doesn’t contain harsh chemicals like ammonia or peroxide and only deposits color on the outside of the hair shaft. It gradually fades with each wash. Processing Time: How long to leave on hair dye that’s semi-permanent? You only need five to 30 minutes.Semi-permanent dye just doesn't work this way. Think of it as watercolor maybe - mo matter how bright the colour you'll take, if you put it on a quite dark piece of paper, you …Hair Care Tip #3: Switch to Air-Drying. Send your blow-dryer on annual leave and switch to air-drying your strands to extend the colouring of semi-permanent dyes. In doing so you'll not only retain vibrancy but minimise the added dryness that sometimes comes from overly blow-drying. Now that you know all about semi-permanent hair colour ...Mix the color: Pour the desired amount of Ion permanent hair color into the mixing bowl. Apply a small amount of desired color to a few select strands. Process for 20-40 minutes depending on the level of color intensity desired, rinse and evaluate for accurate results. Patch Test: Prior to application, a preliminary patch test should be conducted. ….

Take care to ensure that all hairs are evenly coated in your gloss treatment and leave on the hair for around 20 minutes, or as long as specified by your particular product (as with any at-home treatment, be sure to read all instructions that come with your product to prevent damage or unwanted results.) Once ready, shampoo strands with a ...A solid hair mask can help return hydration that's been depleted during the dye process. After you've washed out the dye, grab a nourishing hair mask, like Living Proof Restore Repair Mask ($45; ulta.com ), and leave it on your locks for 10 minutes. Continue the treatment two to three times a week until you feel like your hair's moisture levels ...ion Color Brilliance™ Semi-Permanent Brights are hi-fashion hair color shades designed to give vivid, boldly intense results. In 20 to 40 minutes ion Color Brilliance™ Brights deposits color on pre-bleached natural or color treated hair. ion Color Brilliance™ Brights can be applied to pre-lightened hair and natural or colored hair.After the 2 weeks is up, you can safely re-dye your hair with demi-permanent dye. If you need to use a semi-permanent or permanent dye, it's a good idea to wait a little longer than 2 weeks since those dyes cause more damage to your hair. Aim for at least 4 weeks, or one month, to re-dye your hair in these cases.Section off your hair into four or five parts, and apply the dye to each section. Massage the dye into your hair, making sure to cover all of your hair. Leave the dye in for two to four minutes, then rinse it out with water. Style your hair as usual. Iroiro hair dye is available in drugstores and online.Allow the color to process for the amount of time specified on the box or bottle. 6. Rinse the color out. When the time is up, rinse the color out of your hair with cool water. 7. Style your hair. Now that your hair is colored, it’s time to style it. Ion offers a wide range of products to help you get the perfect look.Semi-permanent dyes: The time it takes for semi-permanent dyes to fade can be anywhere from 30 minutes to 12 hours. Permanent dyes: The time it takes for permanent dyes to fade can be anywhere from 1 hour to 2 days. CAN I LEAVE ADORE HAIR DYE IN OVERNIGHT. The answer is yes.Semi-permanent dye just doesn't work this way. Think of it as watercolor maybe - mo matter how bright the colour you'll take, if you put it on a quite dark piece of paper, you would barely be able to see it. I leave mine for 1 hour. I use heat for 30 minutes of that hour.Color Fresh. As a general guideline, our original and iconic semi-permanent hair color usually lasts for up to 10 washes, making it the perfect pick for a low-commitment and completely damage-free color boost. However, color intensity also plays a role in how long semi-permanent shades last, so vibrant reds or deeper brunettes, for example ... How long to leave ion semi permanent hair dye in, Once you have your color and developer, it's time to bring them together in harmony. Grab your bowl and pour in the desired amount of ion demi-permanent hair color. Next, add the double amount of developer. For example, if you're using 2 ounces of color, add 4 ounces of developer., It goes well on really well and covers my grey. Lisadew24. Easy to use, nice and thick so not messy. Have a lovely vibrant colour that is lasting well. Brilliant!! [This review was collected as part of a promotion.] LeanneS65241562. "Can't believe how easy it was, going to try more shades, I'm going full rainbow!, In the world of hair dyeing, the processing time is the length of time you need to keep the hair dye in your hair for optimal color results. The good news for Julia is that Ion hair dye is a semi-permanent dye, which generally has a shorter processing time compared to permanent dyes. Breaking Down the Numbers: Ion Hair Dye Processing …, Overall, the reviews suggest that Ion Color Brilliance semi-permanent dye is a good choice for those looking for a temporary hair color that lasts longer than other semi-permanent dyes. While there may be some issues with bleeding and unexpected color results, most users seem to have a positive experience with the product., It's best to wait a bit. If you're going with a permanent color, wait 7-10 days + at least one shampoo. Soft Color, which is a demi-permanent one, can be used after 1 shampoo. But do the strand test first as perms can leave hair more porous and can allow color to absorb faster. Question 12: Should I get my hair cut before or after coloring?, 12) Careful With Color Protection Hair Care! If you using shampoo and conditioner, to protect the color, you should stop using them few weeks before using hair color remover. Hair cosmetics with color protection could prevent the remover from working. Better use routine care without color protection., ion Color Brilliance Semi-Permanent Brights are hi-fashion hair color shades designed to give vivid boldly intense results. In 20 to 40 minutes ion Color Brilliance Brights deposits color on pre-bleached natural or color treated hair. ion Color Brilliance Brights can be applied to pre-lightened hair and natural or colored hair., It's best to shampoo 12 - 24 hours before coloring when using semi-permanent or demi-permanent hair color. Shampoo 24 hours before using permanent color. Start your timer. As soon as you’ve finished applying your hair color, set your timer for the amount of time indicated on the box. Remember, that setting it any earlier could affect your ..., Yes, and here are 5 simple steps to achieve the best results in mixing semi-permanent hair dye with hair conditioner: Begin by mixing together your chosen color of dye and conditioner in a non-metal bowl. To mix hair dye with conditioner, you will need a 1:3 ratio. This means that for 1 tablespoon of hair dye, you will need 1/3 cup of conditioner., ion. Brights Semi Permanent Hair Color. $10.99 27 Color Options In-store Pickup 2832. ... Color Defense Intense Leave In Therapy. $8.79 In-store Pickup 214. Add to Bag Save ion. Cool Blonde Purple Shampoo 10.5 oz. $9.89 In-store Pickup 425. Add to Bag Load More Sally Beauty, After the 2 weeks is up, you can safely re-dye your hair with demi-permanent dye. If you need to use a semi-permanent or permanent dye, it’s a good idea to wait a little longer than 2 weeks since those dyes cause more damage to your hair. Aim for at least 4 weeks, or one month, to re-dye your hair in these cases., The first thing you should know is that mixing dye with conditioner only works with semi-permanent hair dye. Not only will conditioner interfere with the developer needed for permanent dye, but adding it to your dye mix will lead to your color applying unevenly. ... Read your hair dye instructions and leave the color in your hair for as long as ..., ion Color Brilliance Semi-Permanent Brights are hi-fashion hair color shades designed to give vivid boldly intense results. In 20 to 40 minutes ion Color Brilliance Brights deposits color on pre-bleached natural or color treated hair. ion Color Brilliance Brights can be applied to pre-lightened hair and natural or colored hair., Ion Color Brilliance Semi-Permanent hair color is available in 10 radiant shades made with the ground-breaking Intuitive Colour System technology which combines two types of direct colorants to create luxurious even color from root to end. ... ARCTIC FOX Vegan and Cruelty-Free Semi-Permanent Hair Color Dye (8 Fl Oz, PURPLE AF) Buying options ..., As our colours are semi-permanent we do recommend that your dye is left to process for 30 minutes minimum but you could leave it on for a couple of hours if you wish. Applying heat to hair dye that is processing can help to open the cuticle of your hair and allow it to absorb the colour a lot more easily., Most hair dyes should be left in the hair for a minimum of 30 minutes and no longer than 45 minutes. The hair dye needs 30 minutes for the ammonia and peroxide to work its way into the hair cuticle to change the hair’s natural pigment. The last 15 minutes are for the dye to fully develop and permeate the hair., Step #5: Wait and Rinse. Once your strands are fully coated, wait the allotted time for your hair color to develop (set a timer so that you're not guessing). When time is up, rinse your hair until the water runs clear. You don't need to wash with shampoo unless the hair dye you're using instructs you to—most will tell you to wait., As for my rating, I feel as though 3 stars is adequate. The deposit of color was great from my level 10 hair (before and after pics) and the vibrancy was very good for being a semi permanent dye. Where the star deduction is coming from is the feel of the dye and amount that needed to be used. My hair is thin, but long., Here are the steps for applying ion hair dye: Start by mixing the dye according to the instructions on the package. Section your hair and start applying the dye to the roots. Be sure to use a brush or applicator for even coverage. Let the dye sit for the time specified on the package., If you’re considering dyeing your hair, timing is key. For dark virgin hair, permanent dye should be left in for 25-45 minutes; pre-colored hair may require slightly longer processing time of 30-50 minutes; resistant gray hairs will need up to an hour of exposure to the colorant; touching up roots generally takes about 20-30 minutes per application while fashion colors or pastel shades can ..., How long you leave Punky color in your hair depends on the color you are using and the desired effect. Most colors require at least 30 minutes to work, but some may need only 10 minutes. ... It is a semi-permanent hair dye, which means that it will last for a few weeks or months, depending on how often it is washed., Dec 18, 2023 · How long do I leave ion hair mask for? Using gloves, apply to wet, cleansed hair. Leave on 3-5 minutes. Rinse thoroughly. How long do you leave bright hair dye in? The packaging usually says something “let sit for 20 minutes before rinsing.” If you leave your hair dye in for 20 minutes that color is not going to last very long at all., Semi-permanent dye just doesn't work this way. Think of it as watercolor maybe - mo matter how bright the colour you'll take, if you put it on a quite dark piece of paper, you would barely be able to see it. I leave mine for 1 hour. I use heat for 30 minutes of that hour., Semi-permanent hair dye changes your natural hair colour. While temporary hair dyes wash out very quickly, semi-permanent hair colour will fade over time and wash out. Change your natural hair colour with red, copper or pink semi-permanent hair colour or express your darker side with black semi-permanent hair colour. Showing 60 of 74 results., Always start at your roots (unless you are lightening your hair for the first time), If you're covering gray roots, the color needs more processing time. But even if you don't have gray hair, the hair at your roots is new outgrowth, and takes a bit more time. It's a good idea to give your roots the most time to absorb color—at least a 10 ..., Shop for Red Color Brilliance Brights Semi-Permanent Hair Color by Ion at Sally Beauty. Get vivid, bold results in 20 to 40 minutes from a unique PPD-free formula that strengthens hair. ... Long Tail Bleach and Tint Brush. $1.39 Add to Bag Add Salon Care. Hair Color Mixing Bowl in Black. $3.79 ... Leave on for 48 hours. Examine at 24 and 48 ..., To use demi-permanent hair color, first make sure your hair is clean and dry. Part your hair in the desired location and apply the color to the roots first. Use your fingers or a brush to distribute the color evenly. Leave the color on for the recommended amount of time, then rinse it out with cool water., In fact, it's normal to expect up to 5 washes with clarifying shampoos to remove semi-permanent hair color. These semi-permanent hair colors will also fade with regular washes, as most are designed to last for 15-20 washes. Still, if you're looking to accelerate the process, a clarifying shampoo is ideal. Other Ways To Remove Hair Dye, To avoid these issues, it is recommended to store your hair dye at a moderate temperature, ideally between 60-75°F (15-24°C). Another important precaution to take is to ensure that the hair dye container is tightly sealed. Oxygen exposure can cause the dye to oxidize and lose its potency., Leave it on for at least 30 minutes (or a little longer if you want) Be sure to leave the dye in for a minimum of 30 minutes for best results and to give it enough time to set properly. Any shorter, and you risk the color fading faster. On the flip side, don't leave it on too long too., Semi-permanent hair colors are an excellent option for folks who like to switch up their hair frequently. These products provide a safe way to change your hair to suit your mood without damaging other types of dye. As long they last, semi-permanent colors are a great way to try out a new look., Using Ion Color Brilliance. Use a nonmetallic bowl or application bottle for mixing your ion dye and ion developer. Mix in a 1 …, How long do you leave color dye in your hair? Timing is 30 minutes for standard color application; 45 minutes for maximum gray coverage and for high-lift shades . Typically, with permanent color, the first 15 minutes provide time for the peroxide and ammonia to open the cuticle and penetrate into the cortex to lighten natural pigment.