The 10 Best Keratin Treatments for Hair in 2026

Editor’s Note: Keratin is one of the most important proteins in our hair, but I find that it is one that is rarely talked about when it comes to building stronger, healthier hair, and replacing hair damage. Keratin treatments can really act as a miracle product for damaged or dull hair, though these treatments can be harsh if used too often. To make sure that you understand how to best apply a Keratin treatment, make sure you skip down to our guide to buying the best keratin treatment where we help you understand everything about this essential hair product.

When it comes to taking care of your looks, few things are more important than your hair. Store shelves are teeming with products that claim to leave your hair smoother and silkier than before, and some of them make the mark. However, a more important question to consider is why your hair needs all this TLC in the first place. How does your hair gradually lose its natural luster?

It’s simple: When you brush or style your hair, or even simply as you age, your hair starts shedding protein. Consequently, you get dull, thinning hair that’s prone to breakage. However, keratin treatments can help restore your hair to its natural sheen by fortifying it with keratin, a naturally-occurring protein in your hair that seals the hair cuticle to make it smooth and shiny.

Today we’re going to discuss all the whats and whys of keratin treatments, so that you can choose the one best suited to your needs.

Factors to Consider for Keratin Hair Treatments

Ease of Use

At-home keratin treatments vary widely in how time-consuming or tricky to apply they are to apply. Some require just a few moments of your time, while others may take hours out of your day. Make sure to pick one that fits with your lifestyle and schedule.

Your Hair Type

What head of hair will respond best to keratin treatments?

• Coarse, frizzy hair will receive them quite well, as the treatments will make the hair smoother, shinier, and much easier to manage.
• Fine, thin, straight, or overly-processed hair should steer clear of keratin treatments. The heat and chemicals used in the treatments may irreparably damage these already vulnerable tresses.
• Curly-haired people who love their natural curls are not advised to get keratin treatments, as they’ll soften the curls and make your hair a bit less wavy.

Potential Damage

Keratin treatments can certainly damage your hair if you get them too often. However, the keratin itself isn’t what does the damage, but the heat that seals it into the hair. Unfortunately, almost all in-salon keratin treatments require flat-ironing your hair to get the best results. If you have any concerns about how your hair might react to the heat, consult your stylist to see which heat level would be the most appropriate for your mane.

Formaldehyde

Many keratin treatments release this carcinogenic gas during use. Interestingly, this is because formaldehyde has some excellent de-frizzing and straightening agents for your hair. However, it’s only a concern for people who regularly expose themselves to it, like salon workers.

FDA-approved keratin treatments all release safe levels of formaldehyde, but some salons tinker with their treatments’ chemicals to achieve better smoothing results. Consult with your stylist about the ingredients they use in their keratin treatments before you choose one; it never hurts to be vigilant.

Maintenance

You won’t maintain your silky smooth locks for long if you continue using that cheap dollar-store shampoo and conditioner. If you’re going to invest in a keratin treatment, you’re going to need to invest in shampoo and conditioner specifically designed to maintain keratin-treated hair. Just watch out for sulfates; these chemicals can frizz your hair like no other, so steer clear of any sprays, shampoos, or conditioners that have them.

Now that you know the main considerations, we can dive into the 10 best keratin treatments out today!