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While treating the hair, it moisturises it. Softens the hair smoothly, allowing for a more comfortable treatment experience. 

It must be administered 1 cm away from the hair's roots.

This two-step straight permanent method includes a straightener and a neutraliser, both of which are permanent solutions that are used with a hot straightening iron. 

Product Specifications 

Both men and women can wear it. 

For highly resistant to resistant hair, a 2-step technique includes both a straightener and a neutraliser (non-colour treated hair) 

Straight hair that is shiny, smooth, and silky for up to 2 months.

Straight effect is flawless. 

Shine, moisture, and silkiness 

Straightening your hair is a simple and effective method. 

Straight hair that is smooth and lovely without being damaged 

Extremely hypoallergenic 

Shiseido Technology Masking Crystallizing Straight Cream is the sole product available. 

There is no ammonia odour or perm product odour. 

Reduce scalp irritation.

Shampoo and thoroughly dry your hair. 

Straightener N1 (400g) 

Coat the entire hair evenly, except the roots, and leave it to set at room temperature for 10 to 20 minutes. 

Then, after thoroughly rinsing, dry the hair and straighten it with a special iron set at 180.c/ 356.f or less for 2 seconds each region. 

Keep the EX1 Straightener 1 to 2 cm above the roots while applying it.on the scalp may cause inflammation and breaking of hair 

To thoroughly remove EX1 Straightener, use an intermediate plain rinse. Wash the roots really thoroughly. 

2 Neutralizer (400g) 

Coat the full head of hair and allow it for 2 to 3 minutes before rinsing softly. Then, thoroughly wash it away. 

2 Neutralizer must be processed completely. 

If the neutralisation is not complete, it may cause damage or hair breakage, therefore cover the hair thoroughly from the roots to the tip to ensure total neutralisation. 


Wear appropriate disposable gloves throughout the service. 

Do not go above the development time limit. 

Set a timer. 

Take care not to let the rinse water go into your eyes. 

Product package and size

No. 1: Crystallising Straight EX1Straightener (400g/13.52oz) 

No. 2: Neutralizer Cream for Crystallizing Straight N Straightener (400g/13.52oz) 


Straight Crystallization 

What exactly does the Crystallizing Straight service entail? 

The Crystallizing Straight treatment is an in-salon thermal straight perm technology that restores the cuticles and inner hair tissue to generate stunning straight hair with high-grade crystal shine and a cashmere texture for all hair types (coarse, fine, curly, frizzy, highly damaged, highlighted). 

How long does it take to complete the service? 

Typically, the entire service takes 3 to 5 hours to complete. 

Can I still get the treatment if my hair is severely damaged and/or I have highlights? 

Yes, however it is not suggested since it is quite simple to further damage your hair if your hairdresser is inexperienced. It is suggested that you undertake the procedure in a Shiseido Professional Specialist salon.

How long can you keep your hair straight? 

Straight Crystallizing is a permanent service. Until the hair grows out, it will remain straight. 

How should I care for my hair? 

Shiseido Professional hair care products (shampoo and hair mask) are used. It is advised to use HPT hair oil and Aquafix leave-in treatment. Other high-quality brand goods are also acceptable. 

When will I be able to colour my hair following the service? 

It is advised that you colour your hair at least one week following the service. 

When will I be able to repeat the service? 

It is suggested that you repeat the service at least every three months. A longer duration is acceptable based on your new situation.

Let us know abour your query!