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CHI

CHI Keratin K-Trix 5 Smoothing Treatment, Hair Serum For Creating Smooth, Frizz-Free Styles That Last, Sulfate, Paraben, & Cruelty-Free, 3.92 Oz

  • Based on 7,441 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Stam Sales

Arrives Wednesday, Aug 19
Order within 44 minutes
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Style: Smoothing Treatment


Size: 3.92 Fl Oz (Pack of 1)


Features

  • Thermally activated smoothing treatment combines with the heat of a styling iron to smooth the hair cuticle, lock in moisture and seal out humidity
  • Long-lasting results, even after washing
  • Infused with Keratix, a unique compound that utilizes sustained- release technology to gradually releases proteins, providing long-lasting treatment results
  • Contains keratin a unique compound that utilizes sustained release technology to gradually release strengthening and smoothing proteins as needed for long lasting treatment results

Description

Gently cleanses and rids hair and scalp of impurities while balancing oils and strengthening the hair. The invigorating and soothing benefits of tea tree oil and peppermint oil work together to balance scalp oils and maintain moisture levels. Brand Story CHI haircare and tools are manufactured by Farouk Systems a Houston based company.

Product Dimensions ‏ : ‎ 1.25 x 1.25 x 3.9 inches; 3.53 ounces


Item model number ‏ : ‎ CHIKT4


Batteries ‏ : ‎ 1 A batteries required.


UPC ‏ :


Manufacturer ‏ : ‎ Farouk Systems Inc


Best Sellers Rank: #11,590 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #27 in Hair Styling Serums


#27 in Hair Styling Serums:


Customer Reviews: 4.4 4.4 out of 5 stars (7,441)


Product Benefits: Maintains moisture levels.


Hair Type: Treatments


Scent Name: Tea Tree


Item Form: Liquid


Liquid Volume: 115 ml


Number of Items: 1


Unit Count: 3.92 Fluid Ounces


Item Volume: 3.92 fluid ounces


Brand Name: CHI


Manufacturer: Farouk Systems Inc


UPC: 633911752623


Global Trade Identification Number: 23


Item Weight: 100 g


Material Type Free: Paraben Free


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 19

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • MIRACLE IN A BOTTLE
Style: Smoothing Treatment Size: 3.92 Fl Oz (Pack of 1)
I recently cut my 2c coarse frizzy hair eleven inches. My hair now comes up to my shoulders and looks like a triangle bob when curly. Stupid me thought I could iron it every day. Dumb idea. After a month of ironing/blowdrying my hair every other day (with heat protector), my hair lost ALL its shine and barely holds a straightening. I didn't want to spend $300 on a permanent salon straightening, so I looked into many different options. It came down to an at-home keratin straightening with a full kit or this. I decided to try this, as it didn't seem nearly as harsh as the other one; I was scared an at-home permanent straightening could make my hair fall out. This seemed pretty idiot-proof :) ~EXPECTATIONS: Most of the reviews seemed to suggest that this was the miracle in a bottle I was looking for, but I was a little skeptical. It was only sold on Amazon and the Chi website, and I couldn't find reviews anywhere other than Amazon, which was both a little odd to me. No Youtube reviews or beauty blog posts on this product. I expected: 1) Softer silkier hair - due to the keratin 2) Straightening with flat irons and blowdrys that last longer 3) Heavier hair - also due to the keratin :) Keratin builds up on hair and can weigh it down, so I did buy a clarifying shampoo to go with it. ~HOW IT WORKED FOR ME: Holy cow! This was AMAZING. It did everything I expected, and more. I put it in freshly washed, mostly dry hair, even though instructions say to use it on damp hair. I also used a LOT, putting on each section of hair as I blew it, and my hair didn't feel heavy at all. As soon as I blew it, I noticed a massive difference. Firstly, it was baby soft! It was like different hair. Second, it made blowing my hair ten times quicker, and my hair didn't get as puffy as it normally did. I didn't even need to iron it, but I did, mainly because I wanted it to last at least 3 days (to minimize heat use). The only 'bad' thing about this is that it smells a little like soap, but its very faint. To people wondering if this protects hair from heat, it doesn't. It's a treatment, not a heat protectant - I used a heat spray after blowing/before ironing. This works great in humidity, terrible in rain (duh). The longest I've gone without washing it out was 5 days, and I only needed to touch up the ends once, but beware of oily hair *-* I use this now twice a week, and it works amazing. If your hair starts to feel greasy after a few uses, it's normal! Keratin is a great protein for hair, but too much can weigh down hair, especially fine hair, so make sure to incorporate a clarifying shampoo into your routine. ~PRODUCTS I USE: Shampoo - giovanni tea tree triple treat shampoo (clarifies and removes buildup) // Conditioner - aussie miracles moist 3 minute deep conditioner // Heat Protector - tresemme heat tamer spray // Leave-in Conditioner - garnier fructis curl air dry cream ... show more
Reviewed in the United States on April 7, 2022 by S.N.

  • Best curl enhancing cream on market!
Style: Smoothing Treatment Size: 3.92 Fl Oz (Pack of 1)
Best detangler for curly hair! Only need one pump and hair combs right out and curls look great. Very moisturizing.
Reviewed in the United States on July 22, 2026 by candice

  • So straight and soft per days!
Style: Smoothing Treatment Size: 3.92 Fl Oz (Pack of 1)
I can't believe how healthy looks and feel, the scent is great, it doesn't feel heavy and it lasts per days. I recommend it 100%
Reviewed in the United States on October 14, 2024 by Evan S

  • Very effective
Style: Smoothing Treatment Size: 3.92 Fl Oz (Pack of 1)
Good value for the money, it leaves your hair soft and prevents from freeze. For me has been really effective. Just need a small amount.
Reviewed in the United States on July 17, 2026 by Tayi

  • Miraculous for bleached/dyed hair
Style: Smoothing Treatment Size: 3.92 Fl Oz (Pack of 1)
Fantastic product, great for bleached/dyed hair and works well in conjunction with their keratin serum! Shiny, beautiful hair, brings out natural wave and curl. Very impressed with the results, and I have never found a better hair treatment product!
Reviewed in the United States on September 5, 2025 by Zain

  • Scent so strong it gave me a horrible headache
Style: Smoothing Treatment Size: 3.92 Fl Oz (Pack of 1)
This treatment works well. It smooths without weighing down my fine hair. The scent, however, is overwhelming. It’s not that it’s bad, it’s just really strong. It’s so bad that it gave me the worst headache. I used it at night and I couldn’t sleep because of the pain, and pain relievers did nothing for it. I ended up washing it out just to get some relief. I’ll gladly go back to the stuff I was using before. It’s twice the price, but no smell. ... show more
Reviewed in the United States on September 22, 2020 by MmeDita

  • CHI HAIR SERUM
Style: Smoothing Treatment Size: 3.92 Fl Oz (Pack of 1)
Excellent hair serum
Reviewed in the United States on April 3, 2026 by Sharon Dube

  • Best Buy
Style: Smoothing Treatment Size: 3.92 Fl Oz (Pack of 1)
I didnt have a lot of faith in this because I have tried so many products and salon treatments but they always left me wanting for more. So when i tried this, i actually did it right before sleep, like an after thought. I was immediately pleasantly surprised by its scent. It smelled rich and sweet. I got a kittle worried as i was blow drying. It didnt seem to have any difference from how it feels blowdrying with my other products. Per product instruction, it is activated by flat irons. And immediately as I started ironing, my hair softened. It straightened quick with just 1 glide. My hair is thin so it didnt take long. It was shiny and flowy and my fingers went through it like cutting butter. But It was late and i had to sleep. I thought it was going to go back to being stringy and dry by the next day (coz thats how my hair usually is after sleep). It is the next day AND it feels and looks soft and shiny still. I am so impressed. I will buy again for sure. Ill update this review after 5 days to see if thats as long as it lasts (as it says on the bottle). ... show more
Reviewed in the United States on June 18, 2020 by Leizel tupaz

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