







✨ Unlock your hair’s ultimate smoothness and shine—because your mane deserves the best! 💁♀️
GK HAIR Global Keratin The Best Smoothing Keratin Treatment Kit is a professional-grade Brazilian blowout system designed to smooth, strengthen, and reduce frizz for up to 5 months. Featuring a powerful blend of keratin and natural seed oils, it repairs hair from within while eliminating curl and humidity effects. The kit includes clarifying shampoo, moisturizing shampoo and conditioner, and a deep conditioner, enabling easy at-home application with no waiting time before washing. Ideal for all hair types, it delivers salon-quality results with lasting shine and manageability.



































| ASIN | B081HVND8V |
| Best Sellers Rank | #58,168 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #28 in Chemical Hair Straighteners |
| Customer Reviews | 3.8 3.8 out of 5 stars (1,685) |
| Manufacturer | GK HAIR |
| Package Dimensions | 8.9 x 5.35 x 5.28 inches; 3.4 ounces |
C**S
Worked on my 4b/c hair
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.
M**I
Straight hair for 6-10 weeks!
The results are amazing. I normally have frizzy wavy hair and for 6 weeks I got really straight shiny hair and now I'm at 10 weeks, and although it's not pin straight, it still looks very good and tamed . I would definitely recommend this product. I applied this on 80% dry hair, and then I left it on for about 40 minutes, then dried it, then straightened it piece by piece, though I straightened it in relatively bigger pieces, I would say the straightening part took me about 50 minutes, and I have quite long hair. I didn't wash it immediately, just in case. I kept it on for a bit longer than 24 hours then I washed it. It felt really heavy during those 24 hours though .
M**7
A Costly Experiment: GK HAIR Keratin Treatment Fell Short
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.
E**A
Gentle and effective. Best product I have ever used
This is a fantastic product. My hair has never felt so good. I used to relax my hair and also used japanese hair straightener for while, all of which were very damaging. This product does not have a smell like other relaxers and keratin treatments. It's so gentle and smells good. I was shocked how well it worked. My hair is soft and manageable now. Although I was not intending to take all the curl out, it did straighten my hair. It looks fantastic.
H**I
Great results at home — same as the salon, but be aware of color fade
I did this keratin treatment myself at home, very carefully and step by step, and the results came out exactly the same as when I used to get it done at the salon with the same brand. The hair becomes smooth, shiny, and straight — just like a professional treatment. However, you should know that this keratin does pull color, especially if your hair is freshly dyed. My hair was dyed black, and after the treatment it turned into a light brown. So if your hair is dark, keep this in mind. Also, after the first wash, the hair can feel a bit dry, so I recommend using a light serum — preferably from the same brand or any serum that is free of ammonia and sulfates. This really helps bring the moisture and shine back, especially in the first few days. Overall, amazing results, just follow the steps carefully and be aware of the color fading.
C**A
4c review
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.
E**D
I like this product because zero formaldehyde which is carcinogens. I was doubting it will straight my curly hair. My hair is too much curly. It straightened my hair by almost 80 percent which is good. Recommend for curly hair . A salon put for me which is v important because they can apply on each section blow iron is also important.
A**T
Very good product. Highly recommend
T**.
There are some mixed reviews on here which caused me to hesitate prior to purchasing this product, but I'm soo glad I did. This is the same treatment my hair stylist uses and the results were actually better than when I go to the salon because... I follwed the instructions! For reference, I have type 4a/b hair, fine strands and eczema on the scalp. A couple things to note: First, avoid getting the Best product on your scalp. At the salon, I got scalp burns because my stylist applied it like a conditioner. Doing it at home, I had a friend help me and applied it like a perm--section by section, focusing on the hair (like they show in the instructions) and I was completely fine, not even a tingle! Second, this is a smoothing treatment. On my hair, it primarily reduced the amount of "kink" in my texture, and left me with more elongated curls. It did not straighten my hair but, it does make my hair super easy to blow out and straighten (I mostly wear my hair straight). Also, I know from previous experience that my hair will revert to its normal kinky curly texture after around 5 months. Third, the Best bottle that comes in the pack is 100ml. I was worried this wouldn't be enough as I have alot of hair, but it was. I needed to use the entire bottle though (and brushed through each section with a denman brush) to ensure my hair was completely saturated. Overall key take away here: I loved the product, my hair looks and feels absolutely amazing. Already bought another bottle of the Best to have on hand for when I need it again in 5 months! Totally worth it!
L**A
I was super impressed with this product. My hair responded immediately and I will buy again. Follow instructions for best results. The product arrived ahead of time and is as described.
S**I
Great
Trustpilot
1 day ago
3 weeks ago