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Are at-home keratin treatments safe? I asked a hair stylist

IMAGE VIA @_edwardsandco/instagram

WORDS BY DAISY HENRY

Frizz-free.

My hair has been through many iterations in the past 10 years. It’s gone from almost black thanks to a supermarket box dye, to light brown, with countless blonde highlights scattered throughout. More recently, I attempted to return to my natural dark brown roots to restore my hair’s health.

Safe to say, I’ve put my hair through the ringer. And no matter how many Olaplex treatments I do, it hasn’t quite restored it to its pre-bleach glory days. I still find myself using expensive products to try and repair my ends and invest in hair oils to help tame the frizz.


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I first came across keratin treatments on TikTok, with before and afters taking people from frizzy and dry hair to locks that look so smooth and silky, they look unreal. Ever since, I’ve noticed keratin treatments popping up more and more, only fuelling my curiosity – until I realised how much it costs to get one done in a salon.

After a little further digging, I discovered that at-home keratin treatments do exist. There are plenty out there and they’re often pitched as a cheaper and quicker alternative, but according to Edwards and Co Founder and Colourist Jaye Edwards, there are a few things to keep in mind before trying one out yourself.

What is a keratin hair treatment and how much does it usually cost?

Keratin is a protein that is part of the makeup of your hair, nails and skin. Essentially, a keratin treatment adds to your natural protein and works to smoothen and straighten hair.

“Applying the treatment to clean, damp hair will put protein back into the hair, smoothening the hair cuticles to repair damaged strands, decreasing frizz and leaving your hair shinier and smoother,” Jaye explains. “This treatment can take between one to three hours and is heat-activated once your hair stylist blowdries and straightens the hair. The heat helps seal the keratin onto the hair shaft, which smooths and strengthens the cuticle and locks in moisture.”

However, a keratin treatment will work differently for everyone and it depends on whether you want to tackle frizz, or focus on smoothening or straightening.

“The cost of a [in-salon] keratin treatment service will vary depending on your hair length and the duration of the treatment,” Jaye says. “Generally, it will range from $440 to $500. The cost is due to the length of the service and the expertise needed for proper application.”

In contrast – how does an at-home keratin treatment work?

“At-home keratin treatments typically involve keratin-infused consumer-friendly products such as serums, masks, or smoothing sprays,” Jaye tells me. “These products are relatively inexpensive and easy to use and help smooth the hair cuticle, reduce frizz, and add shine, but they don’t penetrate the hair shaft as deeply as professional treatments.”

According to Jaye, at-home treatments are a faster alternative to spending a few hours in a salon and can take as little as 10 minutes to half an hour. “They offer temporary results, usually lasting a few weeks rather than months,” he says,

What should you consider before doing it?

The most important thing Jaye encourages people to consider is the health of your hair and the longevity you want to get out of a keratin treatment.

“A good keratin treatment in a salon will always be more worth your while and an investment that will last,” he says. “[But] if an at-home alternative is more within your budget, make sure to look at the ingredients of the products you are considering using. Take some time to do a little research before making a purchase.”

How long do at-home keratin treatments last and how can you maintain it?

Though it depends on your hair type, the products used and how well you maintain it, at-keratin treatments typically last between two to six weeks. However, Jaye emphasises that it’s important to remember results won’t last as long as in-salon treatments, which can last up to three to six months and won’t compromise the health of your hair.

“To get the most out of your at-home treatment, use a sulphate-free shampoo and conditioner,” Jaye says. “I recommend the Original and Mineral Hydrate and Conquer range, which is free from harsh chemicals and is kind to your hair. I also recommend avoiding heat styling and wearing your hair in looser styles, as well as washing your hair less.”

If you want to style your hair, Jaye suggests using a powerful heat protectant, like the Original and Mineral PS Spray or the PS Balm to remain frizz-free and maintain shine.

What are the pros and cons of in-salon versus at-home?

Jaye’s biggest reason for opting for an in-salon keratin treatment is that it will last longer than an at-home alternative. However, he acknowledges that it’s a lot more expensive to receive a professional service.

“A pro for at-home treatments is that they are cost-effective, however, the results won’t last as long as a professional treatment,” he says. “A con is that your hair may be compromised by using non-professional products.”

For a list of at-home keratin treatments, try this.

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