The Best Flat Iron for Keratin Treatment: 2018 Buyers Guide

When looking to repair your hair, a keratin treatment can have some mind-blowing results. However, few people realize that for keratin treatments to be effective, you need a good flat iron to seal the treatment. From high heat to titanium blades, here is everything you need to know about selecting a flat iron to use on a keratin treatment for the best results.

Best Flat Irons for Keratin Treatment Comparison Chart

Product

Our Rating

Price

BaBylissPRO Nano Titanium-Plated Ultra-Thin Straightening Iron

KIPOZI Pro Nano-Titanium Hair Straightener Flat Iron

Keratin Complex Stealth V Digital Smoothing and Straightening Iron

LumaBella Keratin Dual Touch Hair Straightener

Global Keratin GK Curve Titanium 1.5" Flat Iron

What is Keratin Treatment?

Keratin treatment is a method that temporarily straightens the hair. Hair, itself, is mostly made from keratin so this treatment uses the very protein that you naturally find in your hair. Apply the keratin product, and then seal it using a flat iron, as it locks the keratin into your hair. You must not wash it for 3-4 days after the treatment.

The benefits of a keratin treatment are a straighter hair. For those who like to straighten the hair each day, this can reduce the time taken to blow it dry or straighten it. It reduces frizz considerably, leaving the hair looking much smoother and healthier.

Keratin locked in the hair strengthens it, creating healthier strands. Other methods of straightening the hair, use chemicals that tend to damage it, whereas this treatment actually improves its condition.

Unlike straightening your hair, which can last for 24-48 hours, this treatment can last up to 2 months. It can save a lot of time, that was once spent on straightening and blow drying, and is pretty cost effective.

What to Look for in a Flat Iron for Keratin Treatment?

In order for a keratin treatment to work,  you need to seal your hair with high heat. The best way to do it is to use a flat iron that reaches a high temperature, that is why you need to find a straightener that has specific requirements.

First, the flat iron needs to reach a temperature of at least 450F. While this is very high for average use, a keratin treatment needs a temperature of 450F of heat to seal. Without it as high as this, you won't retain the keratin in your hair. When looking for a flat iron, try to find one with many temperatures, as you probably won't use it at 450F on a normal basis.

Secondly, you need a flat iron with titanium plates. While ceramic plates are often recommended to protect the hair, it is important that the plates hold the heat throughout the entirety of the sealing process. The problem with ceramic plates is that they tend to lose heat as they are straightening the hair. Titanium, however, holds the heat very well, as it applies direct, high-heat to the hair. It makes it a far better tool for sealing. Although, be careful to look for real titanium plates, as titanium-coated plates don't work so well.

Best Flat Irons for Keratin Treatment

Below are some of the best options for keratin-sealing flat irons. As you only need a 450F titanium-plated flat iron for keratin treatments, try to consider the other benefits when selecting between these options.

BaBylissPRO Nano Titanium-Plated Ultra-Thin Straightening Iron

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This lightweight flat iron has titanium-coated plates. With 50 heat settings, this model has a top temperature of 450F. The heat plates are extra-long, while the casing is touch-safe.

PROS

  • It heats up to 450F meaning it gets hot enough for keratin treatments.
  • It has 50 heat settings so can be used for a versatile styling when not being used for treatments.
  • Its Ryton housing makes it touch-safe to prevent your hands from burning as it heats up.
  • The plates are extra-long, so it is capable of straightening more hair at a time than most models.

CONS

  • The blades are only titanium coated, which means they are likely to lose heat while straightening. It makes this model less suitable for keratin treatments.
  • There is no digital readout which makes the exact temperature a little uncertain.

This model is a lightweight option that reaches high enough temperatures. It is questionable, however, as to whether the titanium-coated plates can retain enough heat for a keratin treatment.

"I loved it like I can't get enough of it!"


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This model has 1.75-inch nano-titanium plates. The plates float to prevent hair from getting pinched, and there are multiple heat settings from 170F to 450F. It has an 8-foot swivel cord and a digital display for temperature precision.

PROS

  • It heats up to 450F and the digital screen helps to ensure temperature certainty.
  • The blades are 100% titanium ensuring they retain the heat needed for keratin treatments.
  • The nanotechnology helps to break down water molecules to lock moisture into the hair, preventing damage.
  • There are multiple heat settings for variable styling when not being used for treatments.
  • The plates are very wide which decreases the time taken to flat iron a whole head of hair.

CONS

  • This model is quite heavy and can make your arm ache while using it.
  • The LCD display screen can be a little confusing.

This model reaches high temperatures and has 100% titanium plates, making it ideal for keratin treatments. It is a little heavy, but the wide blades mean that it decreases straightening time.

"I can't get over how much body it has in a movement like this, I've never had that!"


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This model features glide-on plates and is infused with keratin to provide the hair with keratin treatment while being used. With temperatures from 350F to 450F, the outer coating has the cool-to-touch technology to prevent the casing from heating up.

PROS

  • It heats up high which is not only good for a keratin treatment, but also for thicker hair.
  • This model heats very quickly.
  • The adjustable heat settings make it a great choice when you are not using it for treatments.
  • The cool-to-touch technology makes it safe and comfortable to use.

CONS

  • Some users have mentioned that it pinches the hair.
  • It is quite heavy to work with.

This model doesn’t make it clear if the blades are 100% titanium, but it reaches a good temperature for keratin treatments. The cool-to-touch makes it more comfortable to use, and the glide-on blades make for swift, easy movement.

"This is the best flat iron I've ever used, I recommend it to all my clients. Honestly, if I'm recommending it to you guys because or anyone else's because I've tested it because I truly truly loved it!"


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With 1-inch floating titanium blades, this model is equipped with sensors that detect dryness to prevent damage by adjusting the temperature. It has a temperature ranging from 300F to 450F and is infused with keratin to condition the hair while in use.

PROS

  • The top temperature and the titanium plates make it suitable for keratin treatments.
  • The plates are infused with keratin to provide conditioning while straightening.
  • The sensors will help to protect the hair when being straightened normally, preventing high heat from being applied to damaged hair.
  • The floating plates enable better precision when straightening.

CONS

  • The adjusting temperature may be an issue when trying to seal keratin treatments.
  • The backside of the flat iron gets quite hot when in use.

It has all the necessary requirements for you to use it with keratin treatments and has the added bonus of floating plates and dryness sensors. The only issue may be the adjusting temperature when you use it with keratin.


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This flat iron has wide titanium plates at 1.5 inches. It has a temperature range of 100F to 450F. It is dual voltage and has automatic shut-off. It has intelligent heat settings, adjusting the temperature when it senses dry hair.

PROS

  • It has titanium blades and reaches high enough temperatures for keratin treatments.
  • It has very low temperatures for people with thin or damaged hair.
  • The intelligent heat settings prevent high heat from being applied to dry or brittle hair.
  • It is dual voltage so it can be used abroad.

CONS

  • The swivel cord tends to get tangled easily.
  • It is quite an expensive model.

This model is very highly rated. It heats to the desired temperature quickly and retains that heat, straightening all hair types very quickly.


Mistakes to Avoid When Flat Ironing for Keratin Treatment

  1. Wrong temperature - It is imperative to use your flat iron on 450F when applying a keratin treatment to your hair. If you do not do this, you’ll find it doesn’t seal properly.
  2. Wrong flat iron - Due to most recommendations, many people have ceramic-plated flat irons. It will not do the trick for keratin treatments as the heat gets quickly lost. For a treatment to be successful, you need to use titanium blades.
  3. No mask - While keratin is safer than other chemical treatments, it can be noxious when inhaled and, if inhaled frequently, it can cause problems for the female reproductive system. Wear a mask while performing these treatments.
  4. Don’t wash it - You need to keep your hair unwashed for 3-4 days in order to make sure the treatment seals properly. Washing it will just wash the treatment away.

Conclusion

Keratin treatments are a great way to get that smooth, silky feel. Use the correct flat iron, otherwise, you simply won’t get the desired look that you intend to. Make sure the flat iron has titanium plates and can get hot enough to seal the hair. Any mineral infusions to the blades will help to secure that soft, silky feel.

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