Shiseido Crystallizing Straight H1 Super Hyaluronic Power Straightener 400g

Brand: Shiseido
Product Name: Crystallizing Straight H1 Straightener + No.2 Neutralizing Cream
Product Type: Permanent Hair Straightening System
Formula Type: H1 (for resistant to natural/coarse hair)
Formulation: Cream
Hair Type: Coarse, Resistant, Frizzy, Curly, Thick
Gender: Unisex
Volume: 400g per pouch (800g total)
Components: H1 Straightener + No.2 Neutralizing Cream
Usage: Professional use only
Application Area: Hair
Country of Origin: Japan
Period After Opening (PAO): 12 months
Packaging: Soft pouch with screw cap

Product Description

     Shiseido Crystallizing Straight H1 with Neutralizing Cream No.2 is a salon-grade thermal straightening system from Japan, developed for coarse, frizzy, and resistant hair types. This two-step treatment works by breaking the hair’s internal structure with the H1 Straightener, then re-bonding it into a straight formation using heat and neutralization. Enriched with Super Hyaluronic Power, it deeply hydrates the hair while delivering long-lasting straightness and crystal-like shine. Trusted by professional stylists worldwide, this treatment transforms difficult hair into smooth, sleek, and manageable strands with results lasting up to 2–3 months.

Key Features and Benefits

• Delivers professional-grade permanent hair straightening

• Formulated for coarse, curly, frizzy, or resistant natural hair

• Results typically last 2–3 months with proper care

• Infused with Super Hyaluronic Power to lock in moisture and prevent dryness

• Leaves hair straight, soft, shiny, and easy to manage

• Smooth cream texture ensures even application and penetration

• Designed for thermal straightening with flat ironing step

• Suitable for salons or experienced home users

• Made in Japan with trusted Shiseido quality
  
  

Key Ingredients

H1 Straightener:

• Ammonium Thioglycolate – Breaks disulfide bonds to reshape hair

• Hydrolyzed Hyaluronic Acid – Delivers deep moisture and hydration

• Hydrolyzed Wheat Protein – Adds strength and elasticity

• Dimethicone – Smooths cuticle and adds shine

• Cetearyl Alcohol – Cream base and emollient

Neutralizing Cream No.2:

• Hydrogen Peroxide – Oxidizing agent to lock in new hair structure

• Dimethicone – Enhances shine and protects the hair shaft

• Ceteareth-20 / Cetearyl Alcohol – Conditions and softens the hair
  
  

How to Use

Important: This is a professional-use product. Always conduct a patch test and strand test prior to full application. Wear gloves throughout.

Step 1: Preparation

• Wash hair thoroughly without conditioner

• Towel dry until hair is slightly damp

• Divide hair into sections for even application

Step 2: Apply H1 Straightener

• Apply evenly 1–2 cm from the scalp

• Leave on for 10–20 minutes depending on hair condition

• Rinse thoroughly with lukewarm water (no shampoo)

• Blow-dry hair completely

Step 3: Heat Processing

• Straighten hair using a flat iron (under 180°C), section by section

• Ensure all hair is smooth and straight before proceeding

Step 4: Apply Neutralizing Cream No.2

• Apply the neutralizer evenly to all hair

• Leave on for 2–3 minutes

• Rinse thoroughly with clean water

Aftercare:

• Do not wash or tie the hair for at least 48 hours after treatment

• Use sulfate-free and color-safe products to extend results

Cautions:

• For external use only

• Avoid contact with eyes and broken skin

• Not recommended for children or pregnant women

• Do not apply to overly bleached, damaged, or sensitized hair

• Store in a cool, dry place away from direct sunlight
  
  

Full Ingredients

H1 Straightener:
Water, Ammonium Thioglycolate, Cetearyl Alcohol, Diammonium Dithiodiglycolate, Ethanolamine, Behenyl Alcohol, Mineral Oil, PEG-100 Stearate, Dimethicone, Hydrolyzed Hyaluronic Acid, Hydrolyzed Wheat Protein, Ammonium Bicarbonate, Ceteareth-25, Fragrance

Neutralizing Cream No.2:
Water, Hydrogen Peroxide, Cetearyl Alcohol, Stearyl Alcohol, Dipotassium Glycyrrhizate, Dimethicone, Ceteth-40, Pentasodium Pentetate, Phenoxyethanol, Fragrance