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Swimmer's green hair: How to prevent it and what's the most effective treatment

Summer is here, and with it comes the sun, dips in the pool, and... the dreaded green swimmer's hair. If you have blonde, bleached, or highlighted hair, you probably know what we're talking about. But why does it happen? How can you prevent it? And, most importantly, if you already have it: how can you effectively remove green from your hair?
In this article, Karseell explains why hair turns green in the pool, how to protect it before swimming, and which treatments actually work to eliminate that annoying greenish tint. Take note!
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Why does hair turn green in the pool?

Regarding why hair turns green in the pool, popular belief blames chlorine, but the real cause of green swimmer's hair is copper sulfate, a chemical used to prevent algae and fungi in the water. This blue mineral adheres to hair fibers, and when mixed with the yellow tone of blonde hair, the result is an unflattering green hue.
Dyed or bleached hair is more porous, making it easier for these minerals to filter in and adhere to its structure. Therefore, the more damaged or dry the hair, the more likely it is to absorb these compounds.

How to prevent hair from turning green in the pool

Now that you know why hair can turn green when it comes into contact with pool water, it's time to talk about prevention. With a few simple steps before and after swimming, you can avoid the dreaded green swimmer's hair and keep its color and shine all summer long:
  1. Shower before swimming: Drench your hair with fresh water before entering the pool. This reduces its ability to absorb chlorinated or copper water.
  2. Hair masks, oils, and protectors: Apply a hydrating leave-in mask, such as Karseell Original, to seal the hair fiber and create a protective barrier.
  3. Swim cap: It's not foolproof, but it significantly reduces direct contact between your hair and treated water. This recommendation is especially for those who spend many hours swimming.
  4. Shower after swimming: Rinse your hair immediately after leaving the water to remove chemical residues. Even better if you can wash with a neutral or moisturizing shampoo.
  5. Avoid pools after chemical treatments: It's important to know that during the week following bleaching or coloring, hair is more vulnerable, so it's advisable to avoid chlorine during that period.

How to remove green from hair after swimming: the most effective treatment

If it's already too late and your hair has taken on a greenish tint, don't panic. There are real and effective solutions. Karseell shares them with you:

Use a toning shampoo to remove green hair

One of the most effective ways to eliminate the greenish tint from hair is to use a toning shampoo to remove green from hair. Violet or blue tones help neutralize unwanted reflections and restore balance to the original color. In this case, Karseell's toning shampoos, specially formulated for blonde, bleached, or highlighted hair, are an excellent option for progressively combating green without damaging the hair fiber.
As a tip, Karseell recommends enhancing the shampoo's effect with a toning mask from the same line to achieve a more uniform and lasting result.

Chelating agents

Secondly, to remove greenish reflections from hair caused by copper, chelating agents can also be used, i.e., substances that help neutralize metallic ions.
Ingredients like vitamin C, apple cider vinegar, or citric acid are known for their ability to counteract this effect. Some homemade options include rinses with a 2:1 mixture of water and apple cider vinegar, or applying lemon juice combined with a moisturizing mask. However, always avoid sun exposure after using lemon, as it can damage hair.
Another popular remedy is to soak your hair in milk for a few minutes to soften the green effect.
Although these natural alternatives can be useful, they should be applied with caution, as improper use could dry out or sensitize the hair. If you have doubts or your hair is very damaged, it is best to opt for professionally formulated products specifically designed to remove mineral residues.

What not to do when treating green swimmer's hair?

In any case, avoid improvised remedies like baking soda, ketchup, or aspirin paste, as they can alter the hair's pH and damage it further, especially if it is already weakened by bleaching.

Enjoy summer without fear of green swimmer's hair

Green swimmer's hair is a common problem, but 100% avoidable with proper care. If you have light hair, your best defense is hydration, pre-swim protection, and the use of specific products after each swim. And, if the damage is already done, trust in toning shampoo to remove green swimmer's hair or professional treatments to restore your color.
Don't let green swimmer's hair ruin your summer. Prepare, protect it, and dive in without worries! Visit our store.
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