What Are Keratin (Glue-in) Hair Extensions: Pros and Cons

If you’re thinking about getting hair extensions, one type that is totally hyped up is keratin hair extensions. These bonded extensions utilize heated keratin proteins and offer several months of wear with a fabulous look.

In fact, plenty of women will tell you that glue-in hair extensions are the absolute best. Are they right, though? While I am 100% on board with that idea, you might not be sold — yet. That’s why I am sharing all of the pros and cons related to glue-in hair extensions.

Keep reading to determine why you (probably) should pay a little more to go the glue route.

Keratin Hair Extensions: Pros

Let’s start on a positive note and dive into the benefits of going with keratin hair extensions. There are many plusses, by the way, so buckle up and get ready for the sweet ride.


One of the hugest benefits of going with keratin-bonded hair extensions is that they are very long-lasting. In fact, with proper application and maintenance, keratin hair extensions can last up to six months at a time. 

The best part is, there is absolutely no maintenance required during this period. Unless you’re having difficulty with your current keratins or want to add more volume or switch up the color, you won’t need to see your stylist for several weeks. 

Blend Effortlessly

A lot of extensions use bonds that are, to be honest, a complete hassle. Think about it – with clip-ins; you’re also going to have that fear that your metal clips are visible. With microbeads, you might not have peak comfort, especially while you’re sleeping.

So, why not ditch hassling bonds altogether? With keratin hair extensions, you don’t have to worry about any discomfort or visibility. Since the adhesive goes on entirely transparent, it’s easy to blend into your natural mane. 

This is especially true if you go the 100% Remy human hair route. Since the hairs are super high-quality and have visible shine, and soft to touch, they will look and act like your real locks. They can be easily styled however you want, too. Yes, please!

Lightweight and Comfortable

With proper installation from a reputable stylist, you can rest assured of comfortable hair extensions that don’t cause any pain or itching. (Which we can’t say for all types of hair extensions!)

Not only are they super comfortable and highly unnoticeable, but you will also enjoy how lightweight keratin hair extensions are. Since this application method utilizes keratin protein bonding, there is no annoying pulling or tugging on the natural strands.

Why is this important? Well, heavy bonds can not only be uncomfortable, but they can strain your natural hair. This can lead to strands that are weak and break easily. Avoid this at all costs by going the keratin hair extension route instead.

Keratin Hair Extensions: Cons

There’s a downside to everything. Luckily, I can confidently say the pros outweigh the cons when it comes to keratin extensions. But either way, you need to know the negatives. So, let’s dive in.

Possible Damage to Natural Locks

Now, I need to emphasize possible. Most people do not struggle with damage to their natural mane. But that doesn’t mean it can’t happen. Truthfully, it all comes down to the installation. 

Since keratin hair extensions are applied using heat, it can be easy to mess up the natural mane. After all, I think most of us are well aware that a lot of heat isn’t great for our tresses.

That’s why it is so important to have keratin hair extensions professionally installed. Make sure that the stylist has ample experience doing glue-in hair extensions. This way, you have a far less chance of damage and can simply sit back, relax, and enjoy your gorgeous new locks.

Lengthy Installation Time

Okay, it also takes a really long time to install these types of hair extensions. Even the swiftest hairstylist can easily take up to two hours to install keratin hair extensions. Is this really a negative, though?

While you’re spending two hours in a salon chair, think about the benefit. Remember- keratin hair extensions easily last up to six months with no maintenance required in between. Why wouldn’t you give up two hours of your time for the immense payoff? Sign me up!

Final Thoughts

Basically, if you want great hair and hair extensions that are lightweight, comfortable, and invisible, keratin is an excellent way to go. If you go this route, make sure you have them installed by a professional to avoid damage to your natural mane.

Also, try and seek out human hair. Remy human hair is recommended, but any type of human hair will do. This will provide the most natural appearance, and there are no limits when it comes to styling, so you can straighten, curl, crimp, and more.

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