Chinese hair extensions struggle to hold a curl due to several key factors related to the natural characteristics of the hair and the processing it undergoes before being used for extensions.
1. Hair Structure and Thickness
Chinese hair is naturally thicker and coarser than other hair types, particularly compared to finer hair like Indian or European hair. The individual hair strands have a larger diameter, which makes them heavier and less flexible. This heaviness causes curls to drop quickly, as the weight of the hair pulls the curl down.
2. Naturally Straight Texture
Most Chinese hair is naturally very straight with little to no natural wave or bend. This means it lacks the natural "memory" that wavy or curly hair has, making it more resistant to curling. Hair types with more natural wave or texture tend to hold curls better because their structure already has a degree of movement.
3. Cuticle Layer and Low Porosity
Chinese hair often has a thicker cuticle layer, which makes it less porous. Low-porosity hair does not absorb moisture or styling products as easily, meaning that heat protectants, setting sprays, and other curling aids may not penetrate effectively. As a result, curls may not set properly or may fall out quickly.
4. Using Chemicals Such As Dye
If you chemically change the hair colour (e.g., dyed, permed, or even using toners), its structure has been altered. This processing can weaken the integrity of the hair, making it more fragile and prone to losing curls faster. Overprocessed hair can also be resistant to further styling changes.
5. Lack of Product Absorption
Since Chinese hair extensions often have low porosity, they do not absorb styling products well. Curl-enhancing mousses, sprays, and creams that help other hair types hold a curl may simply sit on the surface of the hair without effectively penetrating it. This leads to curls that don't last long or fall flat soon after styling.
How to Improve Curl Retention in Chinese Hair Extensions
If you're struggling to curl Chinese hair extensions, there are a few techniques and products that may help:
- Use a Strong Hold Heat-Activated Spray – Applying a setting spray before curling can help lock in the style. Look for sprays that work well on straight or resistant hair types.
- Choose a Higher Heat Setting (with Caution) – Since Chinese hair is naturally more resistant to curling, using a higher heat setting (around 380–410°F or 190–210°C) can help form curls more effectively. However, always use a heat protectant to avoid damage.
- Use a Smaller Barrel Curling Iron or Flat Iron – Smaller barrels (such as ¾-inch or 1-inch curling wands) create tighter curls that last longer. The curl will naturally loosen over time but will still hold better.
- Pin Curls While Cooling – After curling each section, pin it up with a clip or hair grippers until it cools completely. This allows the cuticle to set in the curled shape, making the style last longer.
- Avoid Heavy Silicone-Based Serums – By using silicone-based products can make them too smooth and slippery, making it even harder for curls to stay. Opt for lightweight curl-enhancing sprays instead.
- Try a Light Tease or Texturizing Spray – If the hair is too sleek and slippery, lightly teasing the sections before curling or using a dry texture spray can give it some grip and hold.
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