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1/1/2024 What is Patch Testing?"At any point, you can develop an allergy to something" Don't think just because you've used a certain brand of hair color before you're in the clear. Even if you've already had a particular hair-coloring service in the past, you should always do a patch test first. Companies tend to switch up their formulas often. What is Patch Testing? Patch testing is a procedure used by our hair stylists and colour technicians before applying hair colour to the scalp. It is a simple and safe way of identifying whether the hair dye that the stylist intends to use will cause an allergic reaction with the skin. The reason patch testing is used is to ensure that the chemicals in the hair dye are safe to use on the client. Why is it Necessary? Patch testing is essential to ensure that the active ingredient, Paraphenylenediamine, does not cause an allergic reaction. Paraphenylenediamine is an active ingredient that is often used in hair dyes as it produces a very natural look. Hair salons will use a patch test to ensure the safety of their clients by using a small amount to see if the Paraphenylenediamine in the hair dye causes a reaction on the skin. A patch test is only required when hair dye comes into contact with the scalp. However it is still important to do a patch test for other colour treatments such as hair highlights where foils are used, as the foils can leak and come into contact with the skin. What Does it Involve? The patch test will usually be done 48 hours prior to the appointment. If the test produces a reaction the client’s skin then the hair dye should not be applied. Prior to the patch test the stylist will ask you a few questions to ensure that it is safe for us to apply the colour sample to your skin for the patch test. The stylist will then apply a small amount the hair dye mixture on the skin, usually in the crook of the arm will and advise the client that it should not be washed for the next 1 hour. What are the Risks? Reaction from Paraphenylenediamine usually just results in dermatitis to the eyelids or ears. It may also result in swelling to the face. A severe allergic reaction to Paraphenylenediamine could result in contact urticaria and in extreme cases, anaphylaxis. People working with Paraphenylenediamine can develop a sensitivity resulting in Dermatitis in the hand. What Should I Do if I Have a Reaction? If you do have an allergic reaction to the patch test you will not be able to use any oxidation type hair dyes. You should also alert your Doctor to let them know that you have had an allergic reaction to Paraphenylenediamine.  "At any point, you can develop an allergy to something" Don't think just because you've used a certain brand of hair color before you're in the clear. Even if you've already had a particular hair-coloring service in the past, you should always do a patch test first. Companies tend to switch up their formulas often. Hair coloring is one of the most popular cosmetic procedures. It allows people to change their hair color or to cover grey hair. However, hair coloring can also cause an allergic reaction, which can lead to itching, redness, swelling, and even blisters. To avoid such reactions, it is important to perform an allergy patch test before coloring your hair. An allergy patch test is a simple procedure that involves applying a small amount of hair dye to the skin on your arm or behind your ear. After 48 hours, the area is checked for any signs of irritation or allergic reaction. This test is essential because some people can develop a severe allergic reaction to hair dye, even if they have used it before. Here are five reasons why an allergy patch test is necessary before you dye your hair.  Avoid Allergic Reactions Why does it happen in the first place? Hair dyes contain various chemicals that can cause an allergic reaction in some people. The most common ingredient that causes allergies is p-phenylenediamine (PPD), which is found in most permanent hair dyes. Symptoms of an allergic reaction include itching, redness, and swelling of the scalp, face, and neck. An allergy patch test helps you identify whether you are allergic to any of the ingredients in the hair dye. You can check out the whole range of PPD free hair dye available at the store. Protect Your Skin If you have sensitive skin, it is essential to perform an allergy patch test before coloring your hair. Hair dyes can cause contact dermatitis, which is an itchy, red rash that appears on the skin. An allergy patch test can help you determine which hair dyes are safe for you to use. Prevent Hair Damage Hair dyes can damage your hair if used incorrectly or if your hair is already damaged. If you have any underlying hair conditions, such as breakage, split ends, or dryness, hair dye can worsen the problem. An allergy patch test can help you determine if your hair is strong enough to withstand the chemicals in the hair dye. Determine the Right Shade An allergy patch test can also help you determine the right shade of hair dye for you. Some hair dyes may appear different on your hair compared to the swatch on the box. An allergy patch test can help you see how the hair dye will look on your hair, and you can adjust the shade if necessary. There are 13+ shades available in the hair dye at the store that you can check with to make a right choice. Save Time and Money Performing an allergy patch test before coloring your hair can save you time and money. If you have an allergic reaction to the hair dye, you will have to remove the dye and wait for your skin to heal before trying a different hair dye. This process can be time-consuming and expensive. An allergy patch test can help you avoid this scenario altogether. In conclusion, an allergy patch test is a crucial step to take before coloring your hair. It can help you avoid allergic reactions, protect your skin and hair, determine the right shade, and save time and money. It is important to remember that not all hair dyes are created equal, and what works for someone else may not work for you. Consult with a dermatologist or hairstylist if you have any concerns about coloring your hair or reach out to me for any hair color related query. text from Herbishh.com
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