Everything You Need To Know About Keratin Hair Treatments

Keratin Hair Treatments

What Is a Keratin Treatment?

Can a Keratin Treatment Help with Hair Growth?

Can You Get a Keratin Treatment If You Have Natural Curls?

Can You Get a Keratin Treatment If You Have Color-Treated Hair?

Is Keratin the Same as a Japanese Treatment or Relaxer?

What Is the Process of Getting a Keratin Treatment?

How Long Do Keratin Treatments Last?

Why Won't Some Hairstylists Perform Keratin Treatments?

Can You DIY a Keratin Treatment?

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Everything You Need To Know About Keratin Hair Treatments

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Keratin Hair Treatments

The popular salon hair-smoothing treatments might have a not-so-pretty side after all.

Keratin Hair Treatments

Keratin—the protein that helps strengthen hair to prevent breakage, heat damage, and frizz—is vitally important for maintaining strong and healthy hair.

Keratin Hair Treatments

But keratin straightening, the salon treatments that promise silky-smooth hair, have long come with major health concerns. To get the breakdown of everything you need to know about keratin treatments,

Keratin Hair Treatments

we spoke with celebrity hairstylist and NatureLab Tokyo brand ambassador Andrew Fitzsimons, Eva NYC hairstylist T. Cooper, and celebrity hairstylist Annagjid "Kee" Taylor.

What Is a Keratin Treatment?

Keratin is a structural protein found in our hair, skin, and nails. It's also commonly found in styling products to help strengthen hair—but the term keratin treatment is actually a misnomer.

What Is a Keratin Treatment?

"Keratin treatments are semi-permanent hair straightening treatments that smooth and add shine to frizzy hair," says Fitzsimons.

What Is a Keratin Treatment?

How the treatments work is not through the use of keratin, though. To make hair straighter, a solution containing a formaldehyde derivative or (the much safer) glyoxylic acid is worked through the hair to break the bonds and reseal them in a straighter position.

What Is a Keratin Treatment?

The solution is then blow-dried and sealed with a flat iron, and the results can last anywhere from three to six months.

What Is a Keratin Treatment?

According to Fitzsimons, the treatments work well on most hair types, and he recommends it for anyone who wants to reduce frizz, boost shine, or cut out blow-drying or straightening their hair on a regular basis.

Can a Keratin Treatment Help with Hair Growth?

The treatment’s benefits may make hair seem to grow more quickly, but it’s really all about strengthening the hair.

Can a Keratin Treatment Help with Hair Growth?

“Keratin helps to add shine, reduce frizz, and reduce the appearance of split ends by temporarily bonding the hair back together,” explains Taylor.

Can a Keratin Treatment Help with Hair Growth?

All of these effects can help strands look and feel longer and stronger, “but [they are] ultimately growing at the same rate,” she says.

Can a Keratin Treatment Help with Hair Growth?

In other words, reducing breakage helps give the illusion of more hair growth. “The treatment makes hair more manageable by smoothing down the cuticle and sealing it, helping to prevent frizz,"

Can a Keratin Treatment Help with Hair Growth?

says Fitzsimons. "This can make your hair seem to grow faster because the ends aren't splitting, therefore allowing it to retain its length."

Can You Get a Keratin Treatment If You Have Natural Curls?

Taylor agrees with Fitzsimmons that keratin treatments work well on most hair types. For curly hair in particular, it will completely smooth frizz

Can You Get a Keratin Treatment If You Have Natural Curls?

and add more shine. "Curly hair reflects light less easily than straight hair, so you'll notice more shine after your keratin treatment," she says.

Can You Get a Keratin Treatment If You Have Color-Treated Hair?

Another added benefit is that it will keep freshly-colored hair vibrant. Taylor recommends talking to your stylist and colorist about getting your color refreshed right before your keratin treatment.

Can You Get a Keratin Treatment If You Have Color-Treated Hair?

The treatment seals in the color, making it last longer and appear brighter.

Is Keratin the Same as a Japanese Treatment or Relaxer?

Although it's similar to other hair straightening treatments, keratin treatments are still distinctively different. Taylor explains that keratin treatments are a less harsh option to other straightening treatments like relaxers.

Is Keratin the Same as a Japanese Treatment or Relaxer?

"Keratin is great for those who have frizzy hair and want long-term straight and smooth hair," she says.

Is Keratin the Same as a Japanese Treatment or Relaxer?

"The chemicals with keratin are a little less harmful than those found with other straightening treatments, like a relaxing treatment, which is very harsh."

Is Keratin the Same as a Japanese Treatment or Relaxer?

"The main difference between a keratin treatment and a relaxer is how long they straighten the hair," explains Cooper. "A keratin treatment temporarily loosens your curl pattern, and fades out over time.

Is Keratin the Same as a Japanese Treatment or Relaxer?

Your hair texture will eventually return to its natural state. With a relaxer, that is not the case at all. Relaxers break down the molecular bonds in hair, and permanently straightens it."

Is Keratin the Same as a Japanese Treatment or Relaxer?

Because Japanese hair treatments and traditional relaxers permanently break your hair's bonds using ammonium thioglycolate and sodium hydroxide, they are far more effective on coily hair—

Is Keratin the Same as a Japanese Treatment or Relaxer?

but also more damaging. The growing-out phase will also be more intense than with a keratin treatments, since there will be a line of demarcation when your natural texture grows back in.

What Is the Process of Getting a Keratin Treatment?

The treatment takes a few hours, though it varies based on hair length and type. “Depending on the texture and density of your hair, you can anticipate your salon visit to be anywhere from two to four hours,”

What Is the Process of Getting a Keratin Treatment?

says Fitzsimons. “Your hairstylist will first wash your hair, then apply the keratin treatment onto the wet hair, where it will then sit for about 30 minutes;

What Is the Process of Getting a Keratin Treatment?

however, some stylists might blow dry the hair first and then apply the treatment,” he explains. “Lastly, since the treatment is heat activated, the stylist will flat iron the hair in small sections to seal it in.”

How Long Do Keratin Treatments Last?

The cardinal rule of keratin treatments is to stay away from water and ponytails for at least three days. You don't want to risk creating a bend in your newly-straightened hair.

How Long Do Keratin Treatments Last?

Fitzsimons says the key to maintaining your treatment for as long as possible is using a sulfate-free shampoo on the days you wash your hair.

How Long Do Keratin Treatments Last?

For those with natural curls, Taylor also says not to wet your hair for three days.

How Long Do Keratin Treatments Last?

She also recommends using sodium chloride-free hair products and to wrap your hair in a silk or satin scarf (or pillowcase) to keep the moisture locked in your hair as the treatment can cause your hair to dry out faster.

How Long Do Keratin Treatments Last?

She says that treatments can last up to six months, but does caution that it might impact your curl pattern permanently.

How Long Do Keratin Treatments Last?

But most importantly, Fitzsimons says to consider a few key things before booking that appointment.

How Long Do Keratin Treatments Last?

"There are so many effective ways to smooth the hair while keeping it protected by using the right products and techniques—so a keratin treatment might not even be the right option," he adds.

How Long Do Keratin Treatments Last?

"Depending on your hair’s particular texture, a different treatment, such as a chemical relaxer, might make more sense for you."

Why Won't Some Hairstylists Perform Keratin Treatments?

Part of the concern with keratin treatments revolves around one of the ingredients found in most traditional salon formulas: formaldehyde.

Why Won't Some Hairstylists Perform Keratin Treatments?

The Centers for Disease Control (CDC) defines it as a colorless, strong-smelling gas that is usually used to make building materials, household products like glue and fiberboard, and used as a preservative when dissolved in water.

Why Won't Some Hairstylists Perform Keratin Treatments?

In keratin treatments, it's responsible for locking the hair into that new straight and smooth position for months. But these treatments don't actually contain formaldehyde, because, well, it's a known carcinogen.