INVERTO 60 Advanced Gel Complex Brazilian Keratin Hair Blowout Treatment Formaldehyde Free Straightening Smoothing and Repairing Damaged Hair Keratin Research (Long hair-180ml)

I’ve struggled with frizz and damage from heat styling for years, so I was hopeful but skeptical about this keratin blowout treatment. After using it according to the directions, I’m genuinely impressed — my long hair looks smoother, softer, and much easier to manage between washes. Application & Scent: The gel texture is easy to apply evenly through damp hair. The instructions were clear, and I appreciated that the treatment isn’t overly strong-smelling like some salon products. It has a mild scent that fades as it processes. Performance: After blow-drying and flat-ironing (as directed), my hair felt instantly silkier and looked visibly healthier. The frizz was reduced significantly — even on humid days it stays sleek rather than puffing up. It doesn’t make my hair flat or lifeless, just more polished and smooth. Formaldehyde-Free Formula: I liked that this product is free of formaldehyde — it made the whole process more comfortable and less harsh on my scalp and senses. My hair didn’t feel dry or brittle afterward, which is a big plus compared with some stronger chemical treatments I’ve tried in the past. Long-Term Results: Over the past few weeks, my hair has stayed smoother and looks less damaged. I still use heat tools occasionally, but the treatment has helped protect my ends and reduce frizz, so I’m not reaching for serums as often. Packaging & Size: The 180ml size was enough for my long hair with good coverage — I had just the right amount to work with. The bottle feels sturdy and practical for at-home use. Pros: ✔️ Smoothes and softens hair effectively ✔️ Reduces frizz even in humidity ✔️ Formaldehyde-free and gentle on hair/scalp ✔️ Easy to apply at home ✔️ Noticeable improvement in manageability Cons: ➖ Results depend on proper application (blow-dry + flat-iron) ➖ Takes some time to do correctly — not a quick “apply and go” product Who This Is Best For: Perfect for anyone with long, frizzy, or heat-damaged hair who wants salon-style smoothness without harsh chemicals. If you’re willing to follow the steps and take your time, it delivers noticeable results. Final Thoughts: This keratin treatment lives up to its claims. My hair looks healthier, feels softer, and stays smoother between washes. It made styling easier and gave my hair a more polished look overall — absolutely worth trying if you want a professional-level blowout at home. ✔️ Highly recommend ✔️ Great for long, frizzy, or damaged hair ✔️ Salon-like results without formaldehyde

WOW! Fantastic product! I cannot believe that I did this myself! I have very long hair so I ordered 2x 6oz bottles just in case. Surprisingly, I only used about 5oz of product. I applied using the "curly" method as my hair is already pretty straight and I just want to eliminate frizz. It smells amazing and did not irritate my eyes at all although my scalp did tingle a little bit (nothing major). The whole process took exactly 3 hours, no longer than what it would take at the salon. However the salon is at least $350 (including a long hair surcharge) + tip, which turns out to be $420. This product will save me THOUSANDS plus the time I would have spent commuting to the salon. Thanks for an easy and effective at-home keratin treatment! I hope it lasts the 3-9 months as claimed. UPDATE: 3 months later and my hair still looks great! Washing 1-2x per week with sulfate free products.

I live in Hawaii. It is super humid every day and my hair usually frizzes and triples in volume if I don't braid it. This product is amazing and a lifesaver. I followed the instructions for the super straight type effect. I have shoulder length hair, and almost never straighten it because in this weather there is no point to even try. The only thing I didn't do is straighten it after the first couple washes as it instructs. My hair is frizz-free. I let it down in this weather and it doesn't pouf up. It straight, shiny, soft and a little wavy just how I wanted it. I'm very impressed with the results.

Not the best

This is my third bottle. Works wonders! definitely recommend.

This is a great hair product. It leaves my hair so healthy and straight. Since using it my hair has been shiny and less maintenance. This saves me a lot of time in getting ready in the mornings.

I like the results but it’s a lot of work. Remember to follow steps. Especially, not going to bed with wet hair. Always blow dry or the product will not stay activated. All in all, very please with the results.

It is the Best keratine at-home treatment I’ve ever used! My frizzy and dry hair went so shiny, healthy, and no dryness or frizz as it is done in the salon! Great product! It is easy to use and worths the money!