KERASTASE Simon Thermic Reviews

Name: Simon Thermic
Brand: KERASTASE
Rating: 4.29 (256 reviews)

4.29

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52 Reviews

코몽어머니
Apr 18, 2025
Combination Skin
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Pros
My straight hair is too fine, so even just using a hair dryer always leaves it damaged. But when I apply the essence, I was able to grow my hair quite long without any damage. It has a white lotion-like feel, and there's no stickiness at all when applied to the hair. Even though I have an oily scalp and dry hair, it doesn't make my hair feel heavy when I use it.
Cons
The formula is a lotion, but it is used excessively. It is expensive, but I highly recommend it.
Tip
Applying it to the ends of damp hair and applying heat will provide protection, making the hair stronger.

라로시카
Mar 22, 2025
Combination SkinSensitive SkinAcne Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
I really love it. It's a lotion formula, but there's no stickiness at all, so it's like applying a moisturizing lotion. I've been using it consistently, and for the first time ever, I received a compliment at the hair salon about how nice my hair looks (my hair was previously a bit damaged). The citrus scent is also very refreshing and I love it. I always apply it before blow-drying my hair.
Cons
The only flaw is that the price is a bit high. However, I continue to repurchase it regularly.

무지흰데건조해
Nov 14, 2024
Combination SkinSensitive Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
I love it so much! The hairdresser said that the essence type is better than the oil, so I started using it. When I finished the first bottle, my hair, which was previously frizzy, has improved a lot, and my hair is becoming healthier. I'm now on my third bottle. I'll keep switching between different Techmire products and use them forever. I was using the routine of Simontech Mire - first dry - Kerastase purple oil (& scalp essence) - second dry - finishing with Moroccan oil, as my hair was damaged. But now my hair has improved a lot, so I've reduced the oil to just once...💚
Cons
There are no other shortcomings aside from the lack of courage. Please provide it in a pump type format ㅜㅜ It's extremely inconvenient.
Tip
You should apply the thermal protection essence before drying. And even though it doesn't make your hair greasy when you use a lot (on dry hair), the days when you applied it excessively, it seemed like it caused some trouble on your neck!

160/43
Apr 18, 2024
Combination SkinSensitive SkinAcne Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
It's my absolute favorite! It's so moisturizing and has a subtle fragrance. I thought the 150ml size would be small, but it lasts much longer than I expected. Since I dye my hair frequently, it's much better than oil treatments - my damaged hair feels so much softer. I was looking for a moisturizing gel formula and this is the only one I can use now.. Oil-based products just make my hair feel stiff and the fragrance is not too artificial, which I really like💗
Cons
None..ㅠㅠ I wish there were more discounts on my favorite brand💖
Tip
Just blot your wet hair with a towel to remove excess moisture, then apply a generous amount✨ In the winter, I mix in a drop of oil as well🫶🏻

리프탄
Aug 8, 2023
Combination SkinSensitive Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
The essence has a lotion-like texture The application is also smooth, and since I get a perm every two months, I tried it as a heat protection essence, and I feel like the damage from the hair dryer has decreased. The volume is also larger than expected, so I think it will last a long time. So I don't think the price is that expensive!
Cons
It's known for having a good scent, but to be honest, I have no idea.. It's not a strong scent, and it's not like the nice-smelling salon shampoo either. It's a bit like orange and a slight rubber smell...? Personally, I dislike it. Everything except the scent is good.

공복식사
Oct 10, 2022
수부지Sensitive SkinAcne Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
This is an essential product!!! I've tried various hair essences, and this one is my favorite. It's the only one I've used up completely and repurchased. My hair was extremely damaged, and I didn't take care of it, but this product made my hair look better!!!! This has made me obsessed with hair products. First, you need to use this product consistently and absorb it well. When I first bought and used it, I was extremely disappointed and thought, "Why is this so famous???" because I had spent a lot on it. But after applying it diligently for a few weeks, my stiff, frizzy hair gradually became soft and shiny. After using it carefully and consistently for over a month, I noticed a difference when washing my hair - it felt smooth and swinging. Even when I didn't apply it and just dried my hair, it remained calm and soft. When taking photos, my hair looked so shiny that my friend asked how I took care of it. I recommended it to my friend, and she was also satisfied. This is an indispensable product, and I plan to repurchase it when I run out. It doesn't make my hair sticky or greasy. It's my favorite item. By the way, for extremely damaged hair, a hair oil is essential as a finishing touch. This product alone may not be enough to achieve silky-smooth hair.
Cons
The price is too expensive.. The price has recently gone up, so I stopped buying it. With the remaining bottle, I can't apply it daily because it's so pricey, so I only use a generous amount on important occasions. So, unlike before when I would apply and care for it daily, the softness only lasts for the day I apply the essence and the next day.
Tip
Absolutely!!!!! You must apply it when your hair is still very damp!!!!!!! If you apply it to dry hair, it becomes extremely sticky and doesn't absorb well. I tried it once and never did it again. You should treat your hair the same way as your skin, and *handle it multiple times to ensure good absorption*. On really important days, instead of applying it all at once, *I layered it multiple times*. * And you should never apply too much at once. It's much better to handle an appropriate amount multiple times. Think of it like your skin care routine! After the initial application and handling on damp hair, lightly dry it, > then apply and handle it again, and lightly dry it again, > finally, apply and handle the hair oil you have, and finish drying. This will leave your hair calm and composed that day. * The oil from this brand is ㅂ...big...big......

서쌤~!
Sep 19, 2022
Dry SkinSensitive Skin
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Reviewed by The Hwahae Testers
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Pros
It gently adheres but significantly alleviates the damaged condition of hair that has been frequently dyed. I'm using many products, and this is my favorite among them.
Cons
The texture seems too light, so I'm not sure if it will be okay even in the winter.

달콤한전복1190409
Jul 10, 2022
Normal SkinSensitive Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
I use Kérastase hair products exclusively, and the fragrance is simply wonderful 👍 My hair has become much softer, and even though I color it frequently, leaving it damaged, people often comment that my hair looks better than before.
Cons
The fragrance is great, but it doesn't seem to last very long...😭

나야나aa
Apr 18, 2022
Normal SkinAcne Skin
Review under verification
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
It's good to apply it before using a hair dryer, as it seems to reduce hair damage.
Cons
It's almost perfect, but the price is a bit disappointing.

편안한두루미류53192
Jan 29, 2022
Combination SkinSensitive Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
The refreshing fragrance, I used it when I was too busy to take care of my hair. I didn't realize it until I stopped using it, but my hair ends were splitting and becoming dry... Now I can't live without it. If you use it consistently every day, the splitting and dryness will improve. I frequently bleach and dye my hair, and I definitely feel like there is less damage. I always keep it stocked. The usage is also very convenient, so I highly recommend it for busy people.
Cons
The price is a bit disappointing, but going to the salon for care is also costly and takes too much time, and the effects don't last that long either. And it's a bit awkward to say it's expensive since I've used it for a long time.