What is acid straightening?

Acid straightening (酸性縮毛矯正) is a gentle, low-damage way to straighten hair. It works at a soft, near-neutral pH — much kinder than traditional straightening — so your hair comes out smooth and shiny, with natural movement, not stiff or flat.

Because it’s gentle, it works well even on hair that is dry, fine, or color-treated. The result is smooth, manageable hair that holds up against Tokyo’s humidity and lasts for months.

Who it’s for

• Foreigners living in or visiting Tokyo who can’t find an English-speaking salon they trust
• Curly, wavy or frizzy hair that swells and frizzes in Japan’s humidity
• Color-treated or fine hair that needs a gentle approach
• Anyone who wants natural, smooth hair — not a stiff, over-processed look

Why an English-speaking stylist matters

Straightening is permanent for months, so getting the consultation right is everything. A small miscommunication about how straight you want it, or how your hair behaves, can change the whole result. Here, the entire consultation is in clear English (or 中文) — so we agree on exactly what you want before we start. I’ve spent 23 years working with international hair, including years in Singapore.

Real results from international clients

See before & after results from clients of many nationalities — Korean, Filipino, Indian, Russian, Tunisian and more — on the Hair by Country page. A few examples:

Pricing

Final price depends on length and condition. Send a photo for an exact quote — no fee. See the full services & pricing page.

How to book

The easiest way is to send me a photo of your hair on WhatsApp. I’ll reply with an honest price and what’s possible for your hair. Ginza: Tuesday–Sunday. Yokohama: every Monday.