GK HAIR Global Keratin The Best Consumer Box Kit (10.1 Fl Oz/300ml) Smoothing Keratin Treatment Professional Brazilian Complex Blowout Straightening For Silky Smooth & Frizzy Hair
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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 10 left in stock, order soon!
Arrives
Sunday, Nov 9
Size: 9 Piece Set
Features
- HAIR SMOOTHING TREATMENT: The Best rejuvenates hair making it smooth, strong and frizz-free. Treatment lasts 3-5 months. The Best is a salon professional smoothing treatment and can be applied at HOME. Advanced yet fast and simple to use keratin treatment that instantly straightens, smooths, repairs, conditions, and strengthens the hair using an intense conditioning remedy which restores vitality by repairing the hair from the inside out.
- NATURAL SMOOTHING: Tratamiento de Keratina Queratina natural straightening treatment helps smooth hair naturally by conditioning, Natural Seed Oils, repair damage within the hair. GK Hair pH+ Clarifying Shampoo An important step that opens the hair cuticle from oils product build-up chlorine environmental impurities to fill with The Best Keratin, GK Hair Non Sulfate Moisturizing Shampoo & Conditioners (A keratin anti-aging protein) provides superior protection moisture a lasting shine.
- NO WAITING TIME TO WASH AS NORMAL: There is no wait days after the application to be allowed to wash your hair again. This GK Hair Keratin treatment The Best kit also known as Brazilian keratin treatment comes with 100ml/3.4oz Ph+ Clarifying shampoo, GK Hair The Best Keratin Treatment, GK Hair Moisturizing Shampoo, GK Hair Moisturizing Conditioner and Deep Conditioner 20ml sachet Stop buying Frizz products that work for one day.
- REDUCES NATURAL CURL: The Best reduces the natural curl pattern of the hair and closes the hair cuticle, eliminating frizz. The benefits of keratin are undeniable. Keratin penetrates deep into the hair and improves it from the inside. The product smooths & moisturizes, making combing easier. Its unique formula, saturated with a rich composition of natural ingredients and a high keratin content, will give your hair a luxurious shine and vitality!
- THE BEST HAIR STRAIGHTENING TREATMENT: Temporary straightening treatment for frizzy hair, it strengthens your hair for up to 5 months. Amazing results, one of the best in the world. Eliminates frizz and curl, promotes healing of hair, blocks the effects of humidity, great for all hair types. Great Formulation: Enhanced for tough cases of curly stubborn hair.Rich infusion of nourishing cleansing elements provides a luxurious lather that leaves hair healthy strong vibrant manageable.
Brand: GK HAIR
Hair Type: Wavy, Curly, Afro American
Item Weight: 10.1 Ounces
Product Benefits: Prevents breakage, Reduces styling time, Smooths and straightens hair, No wait time for shampooing
Item Form: liquid
Product Dimensions : 1.89 x 1.89 x 8.19 inches; 10.1 ounces
UPC :
Manufacturer : GK HAIR
Best Sellers Rank: #55,109 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #28 in Chemical Hair Straighteners
#28 in Chemical Hair Straighteners:
Customer Reviews: 3.8 3.8 out of 5 stars 1,695 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Nov 9
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: The Best Kit (33.8 Ounce)
I love this and i will be using this keratin now and then.!
Reviewed in the United States on September 22, 2025 by Binita Regmi
Size: 100 ml
I’ve used this GK Hair Keratin Treatment kit on my fine, slightly wavy hair, and I’m really satisfied with the results. The formula is truly gentle — no strong smell, no burning, and most importantly, it didn’t cause any irritation to my scalp or hands during application. It’s a great fit for hair that’s not too thick or too curly, and the 100ml size was just enough for my shoulder-length hair. I noticed a visible improvement in smoothness and manageability after use. Also, it’s free of formaldehyde and sulfates, which makes it a safer choice compared to many other treatments. Highly recommend if you’re looking for something effective but not too
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Reviewed in the United States on July 31, 2025 by Salma.H
Size: 3.4 Fl Oz (Pack of 4)
I purchased the GK HAIR Global Keratin "The Best" Smoothing Keratin Treatment Kit with high hopes, expecting a significant reduction in frizz and smoother, straighter hair. While the product was easy to apply and came with clear instructions, the final results did not meet expectations. Despite meticulously following the recommended steps, including processing time and aftercare, the treatment did not produce a noticeable difference in texture or manageability. My hair remained prone to frizz, and the promised smoothness was minimal. Given the brand’s reputation and the investment in this kit, I anticipated more effective results. To improve the experience, GK HAIR could provide more detailed guidance on how to maximize results for different hair types. Additionally, adjusting the formula to better deliver on its claims of lasting smoothness would make it more reliable. For those considering a keratin treatment, I would recommend researching alternatives with consistently positive reviews. Overall, while the packaging and instructions were well-done, the effectiveness of the treatment did not justify the price. A more reliable formula would make this a worthwhile investment.
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Reviewed in the United States on May 6, 2025 by Morgan 17
Size: 3.4 Fl Oz (Pack of 4)
My hair never flew in the wind until I used this. Trust the process follow the box, I tried to blow dry the product into my hair without washing it out, and my hair felt sticky, so I washed and shampooed it and conditioned it and then blow dried it. My hair was dry and hard. I added a little bit of silk infusion and started to flat iron , and my hair is silky and soft and every step I take, I can feel my hair flying behind me my hair is only shoulder length. I needed to trim my ends in order to have the full experience.. I have a flat earned my hair in five years because it never turned out like this. It did burn a little did better on my scalp but I just sprayed it with my water bottle to soothe the pain and it worked. It does not stink if for the people who are saying that one of their bottles came opened already the silver part they’re looking for is literally attached to the cap I had the same issue and I already knew that was the problem just looking at the pictures. My hair feels light and amazing and I still have my Afro.
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Reviewed in the United States on December 10, 2024 by Cynthiaouya
Size: 3.4 Fl Oz (Pack of 4)
First-time User: I have very thick hair - I should have purchased an extra tube of the activator in addition to the kit. I didn't saturate my hair enough. My ends did not come out as well as expected. I also have to buy more regular shampoo and the two conditioners. But overall, I like it and will use it again! The faster you can apply the "Best" activator - the better! I took too long on my first try (over an hour) - but fortunately, no negative side effects! I use permanent color and the process did change the color of my hair - made it much lighter - too light for my tastes - so I will color it again in the next 10 days or so... I also went to the hair salon to have it washed out, blown dry and flat-ironed - I thought it best to make sure it was done correctly - especially the back. All in - I still saved money by doing the process myself. One more detail - My hairdresser said to do "touch-ups only" after this, to not reapply the treatment to hair already processed. Now that I know how it works, it will be easier and faster! GREAT!
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Reviewed in the United States on June 23, 2025 by ETC
Size: 3.4 Fl Oz (Pack of 4)
GK hair treatment Despises de leer los reviews, compré el producto. Las instrucciones están claras, pero el resultado no fue el mejor. Mi pelo quedó muy reseco.
Reviewed in the United States on July 24, 2025 by Veronica O.
Size: 9 Piece Set
I have 3A to 3B curly hair. The product worked great and I applied it myself. The whole process took me around 3-hours, and I executed each step appropriately with breaks in between. “ So far, the product is great. I’ll monitor to see how things pan out over the next months and will update accordingly. I highly recommend it.
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Reviewed in the United States on July 30, 2025 by MissJD MissJD
Size: 3.4 Fl Oz (Pack of 4)
I have 4b/c hair. I was hesitant to purchase, but read the review from another 4 tenured lady here and saw a review on YouTube from another. I have also had salon keratin treatments in the past. People need to understand that this is NOT A STRAIGHTENER. It’s a smoothing treatment that helps with frizz and manageability. And to that point, I am VERY happy with my results. There is no horrible smell or fumes like the salon version. It didn’t burn at all and I found it easy to use overall. My kit had all the advertised pieces. The shower cap is a little small and the gloves aren’t the best, but fortunately, I had extras of those items on hand. I had great results immediately and my hair stayed straight for 2 weeks in Texas heat and humidity until I washed it. My hair reverted after the shampooing but was much easier to handle and manipulate than before the treatment. After the first wash, I conditioned, dried, and flat ironed (only 1-2 passes this time) and it stayed straight again. I’ll see how long it lasts. So far my hair seems like it’s still healthy and non-damaged. I’ll try to update this review if there are any significant changes.
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Reviewed in the United States on July 24, 2024 by Carrie A. Simmons