Japanese Hair Straightening in Toronto: Cost, How Long It Lasts and Aftercare

MOMO HAIR · 2026-11-08

Japanese hair straightening is the service we are best known for at MOMO HAIR, our salon at Yonge and Eglinton in Toronto. Clients drive in from all over the GTA for it. Here are honest answers to the questions people ask most before they book.

What is Japanese hair straightening?

Japanese hair straightening, also called a straight perm or thermal reconditioning, is a permanent way to make wavy, curly or frizzy hair straight. A solution softens the bonds inside the hair that make it wave or curl. The stylist then straightens the hair carefully with a flat iron, section by section, and a neutralizer locks the new straight shape in.

The key word is permanent. The hair that is treated stays straight. It does not wash out like a keratin or Brazilian treatment. If you are deciding between the two, read Japanese Straightening vs Keratin Treatment.

How long does it last?

The treated hair stays straight until you cut it off. What comes back is your new growth at the roots, which grows in with your natural texture. Most clients come back for a root touch-up about every six months to a year, depending on how fast their hair grows and how much the roots bother them. A touch-up treats only the new growth, not the whole head.

Who is it good for?

Japanese straightening works well for:

• Wavy or frizzy hair that puffs up, especially in humid weather.
• Curly hair, when you want it sleek and straight every day without a flat iron.
• Very curly and coily hair (types 3 and 4). It can work, but it needs careful assessment and an experienced stylist.

It may not be a good fit if your hair is heavily bleached, very damaged, or has been relaxed with a different chemical. Some of these can't safely take a straightening treatment. We check this at the free consultation, and we do a free 5-minute strand test when your hair has been coloured or treated before.

How long does the appointment take?

Plan for most of a day. It usually takes about 3 to 5 hours, and long, thick or very curly hair can take longer. The flat-ironing is slow, careful work, and rushing it is how hair gets damaged.

What is the aftercare?

The first two days matter most:

• Don't wash it for about 48 hours. Your stylist will tell you the exact timing.
• Keep it down and straight. No ponytails, clips, hair ties or tucking it behind your ears for those first days. Anything that bends the hair can leave a kink.
• Keep it dry. Avoid sweaty workouts, steam and rain if you can.

After that:

• Use a gentle, sulfate-free shampoo and a good conditioner.
• A light leave-in or oil helps keep the ends soft.
• Most people can simply blow-dry and go. Many stop using a flat iron at all.

How much does Japanese hair straightening cost in Toronto?

In Toronto, salons usually list Japanese straightening "from" about $200 to $300, and the final price often goes higher for long or thick hair (Toronto salon listings on Fresha, November 2026). Prices vary a lot because the time and skill needed vary a lot from one head of hair to the next.

At MOMO HAIR, a first full Japanese straightening starts at $450, and a root touch-up around six months later is $350. That is above the Toronto range, and here is why. Our straightening is done by Claire, our Japanese hair straightening specialist with 20 years of experience, and our Director Liz has 28 years. Every service starts with a free consultation, where we look at your natural hair (not blow-dried) and tell you the exact price before we start. Our clients are very happy with their results, as our reviews show, and many travel hours to come to us.

Straightening is chemical work. A cheap or rushed straightening can leave hair broken, stiff or still frizzy, and fixing damaged hair usually costs far more than doing it right the first time. When you choose a salon, look at its real before and after photos, not only the price.

Can I see real results?

Yes. Our Japanese hair straightening gallery shows our own clients' hair before and after, from wavy and frizzy to very curly and coily.

Ready to find out what it would cost for your hair?

Come in for a free consultation with your hair natural, not straightened or blow-dried, so we can see your real texture. We will tell you honestly what is possible and give you the exact price. Book online or call (647) 381-1398. We are on the 2nd floor at 2156 Yonge St, just south of Eglinton.