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>If you've used Yoon Sei, please give us a review.
I've used almost all of Yoon Sei's products, and there are two main types of shampoo: regular mild acid shampoo and hair loss shampoo, but weak acid shampoo is just an easy style. After you wear it, your hair becomes quite soft. And shampoos for hair loss are almost plant-based, made of herbs as the main ingredient, but they seem to have a little individuality. My scalp was so itchy when I used it for hair loss, so I gave it to my mother, and she said it was okay no matter how much she used it.
And the conditioner doesn't contain surfactants, so it's okay to touch the scalp. It softens your hair. The treatment didn't really feel like my hair was getting better.
But I heard that Yoon Sei's product has some problems. So I gave it to someone who asked for it, but Yoon Sei shampoo used formaldehyde as a preservative. I found out while surfing the Internet, so when I looked at the main ingredients, it was really contained. Formaldehyde has been used as a preservative for shampoo for a long time, but it has recently been known that side effects such as atopy can occur, so domestic shampoo companies have stopped using it. If you look at foreign products, there are products that are still being used.
It's a slightly acidic shampoo similar to Yoon Sei's, and it's really nice to use it, but I don't know what I used as a preservative because I can't read the main ingredient because it's in Japanese.) There are also Dokdo problems and textbook distortion problems, so I don't think I can recommend it.
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