Shiseido Crystallizing Straight is a two-step permanent straightening system: Step 1 softens the hair with H1 Hair Softener, and Step 2 locks the shape with H2 Neutralizer. It is made for naturally curly, coarse or hard-to-manage hair that has never been coloured, and it works with a hot flat iron to give long-lasting straight results.
What Is Shiseido Crystallizing Straight?
It is a two-step permanent straightening system. The chemical softener changes the keratin structure inside the hair, and the heat from a flat iron sets the new straight shape.
Best for: naturally curly, coarse or resistant hair that has never been coloured. The salon-size set is 400g and includes H1 softener and Neutralizer Cream.
Step 1: How to Use H1 Hair Softener
- Apply evenly: start from the mid-lengths to the ends, keeping 1-2 cm away from the roots so the cream does not touch the scalp.
- Processing time: leave for 10-20 minutes; very coarse hair can go up to 25 minutes. Then do the stretch test — pull one strand; if it slowly returns to its original length, the hair is soft enough.
- Rinse and straighten: rinse thoroughly with lukewarm water, dry the hair completely, then set it with a flat iron at 180°C.
Step 2: How to Use H2 Neutralizer
- Full coverage: make sure the neutralizer covers the hair from roots to ends to lock in the straight result.
- Comb and wait: spread it with a wide-tooth comb and leave it on for 20-30 minutes.
- Rinse thoroughly: rinse it all out. Neutralizer left in the hair can weaken the hair structure.
Safety & Aftercare
- Avoid the scalp: H1 contains strong alkalis and can cause irritation, so keep it off the scalp.
- Daily care: use an ionic nutritive shampoo to keep the cuticles closed.
- Weekly mask: use a protein hair mask 1-2 times a week to nourish the hair.
Who Should Use It?
It suits healthy, uncoloured hair that is naturally curly, coarse or hard to style. Do not use it if your hair is bleached, badly damaged, or if your scalp has cuts, eczema or allergies. First-time users should check with a professional stylist.
FAQ
How long does the whole process take? Step 1 takes about 10-25 minutes plus rinsing and ironing; Step 2 needs another 20-30 minutes. The exact time depends on your hair type.
Why does the stretch test matter? It tells you whether the softening is complete, so the hair does not turn gummy or over-processed.
Summary: the key to Shiseido Crystallizing Straight is the Step 1 softening time and a thorough Step 2 neutralising rinse. To get the set, check the product page or message us on WhatsApp for advice on your hair type.