Harajuku · Tokyo · English-speaking stylist
Frizz, unwanted waves, and time spent trying to make your hair behave. Japanese permanent straightening can make your daily routine easier, with hair that feels soft and falls more naturally.
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The problem
Some mornings, getting your hair the way you want takes more time than it should. Frizz, unwanted waves, and texture that changes throughout the day can make styling frustrating — especially when humidity makes things worse.
What makes the difference
Japanese permanent straightening restructures the hair from the inside — not a coating, not a temporary fix. The result lasts. And in skilled hands, the finish isn't stiff or heavy. Straight, but still soft.
Results
Glossy and smooth. The delicate hair around the face is fully straightened, and so is the hair underneath. A soft finish — straight, without the stiffness.
Before
After
Before
After
What clients say
“Hands down the best haircut I've ever had and honestly the best salon experience too. He didn't just transform my hair, he completely boosted my confidence. It's never felt this silky and healthy and the compliments haven't stopped since. What truly sets him apart is his personality, warm, thoughtful and full of good energy.”
“thank you Yuni! i had the japanese hair straightening and a layered cut. Yuni is the most attentive hairdresser who will sit and listen to your concerns. he is passionate and so incredible. i couldn't recommend You No Suke more!”
“I did a haircut and a straight perm two times there and I fully trust him. I am French and with curly hair so it is really convenient that Yuni speaks perfectly English and knows how to handle my hair type. I'm saving so much time everyday. My hair are very soft. I'm not afraid of them getting fluffy due to the humidity.”
Questions
Does it work on bleached or colour-treated hair?
Bleached hair is generally not a candidate for this treatment. For clients with colour or digital perm history, the level of damage determines what's possible — which is why every first-time client starts with a 30-minute consultation. If you'd like to discuss your hair history in advance, a Zoom consultation is also available. Book a Zoom consultation here.
Will it damage my hair?
As a chemical treatment, there is some impact on the hair — that's the nature of the process. Which is why the care around it matters: the amino acid cleanse, the intermediate treatment, the post-care. The goal is hair that leaves in better condition than you'd expect.
How long does it last?
The hair that's been treated stays straight permanently. As new growth comes in, you may notice changes in how the hair falls, sits, or moves — even if the treated sections remain straight. Most clients come back every 4 to 8 months.
Can I wash my hair normally after?
You'll need to avoid washing for 48 hours and avoid tying your hair for a few days. I'll go through home care in detail before you leave, including how to dry your hair.
Is it different from a keratin treatment?
Japanese permanent straightening chemically breaks and rebuilds the hair's internal bonds — the shape of the hair is permanently changed. A keratin treatment works differently: it coats the hair with hydrolyzed keratin and heat, smoothing and reducing frizz. The effect gradually fades with washing. Two fundamentally different processes.
How do I book?
Use the button below to book online. If you have questions before booking, email us at hello@younosuke.jp. If you'd like to share photos of your hair condition beforehand, or simply want to ask questions before your first straightening, a free Zoom consultation is also available — book it here.
Location
Ready?
One stylist, one client at a time. English throughout.
Reserve Your AppointmentEnglish-speaking stylist · Harajuku · Online booking
