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Sleek by Hailey

4B CLIP INS

4B CLIP INS

Regular price $553.00 CAD
Regular price Sale price $553.00 CAD
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Our 4B Clip-Ins add instant length and volume with dense, zig-zag coils designed to blend naturally into 4B hair textures. This curl pattern delivers bold fullness and texture while maintaining a natural, lightweight feel.

Crafted from 100% ethically sourced human hair, each set is cuticle-aligned to help preserve coil integrity, reduce tangling, and maintain softness over time. These clip-ins can be worn in their natural coil pattern or lightly styled, offering flexibility while protecting the health of your hair.

Product Information:

  • 100% Human Hair
  • Ethically sourced & cuticle-aligned
  • Heat safe for styling
  • Color safe for customization

final sale - no returns, exchanges, or refunds
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  • Free U.S. & Canadian shipping on orders over $300
  • This item is final sale! Return Policy
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The brand that represents all hair textures.

The brand that represents all hair textures.

The brand that represents all hair textures.

Care Instructions

Proper care is essential to maintain the quality, softness, and longevity of your hair extensions. With the right routine, your hair will remain tangle-free, smooth, and long-lasting. Follow the care instructions below to help preserve the integrity of your extensions and ensure the best results throughout wear and styling.

  • Co-wash before installation
  • Use sulfate-free shampoo and conditioner
  • Detangle gently with fingers or a wide-tooth comb
  • Air dry for best results
  • Use a heat protectant before heat styling 

hair extension length guide

Not sure which length to choose?

Choosing the right length can make all the difference. Our hair extension length guide helps you visualize how each length will look, so you can confidently select the perfect option to match your desired style and overall look.

Hair Extension Length Guide

Frequently Asked Questions

How many bundles do I need for a full sew-in?

Density is always based on personal preference. For standard volume guidelines, we recommend 2 bundles (200g) for lengths 16" and above. For lengths 18" or more, we recommend 3 bundles (300g) at minimum.

View the Hair Extension Length Guide

Can my extensions be hot tool styled?

Absolutely! When working with luxury human hair extensions, you can (and should!!) treat them just as your own hair growing from your scalp. Before using any heat tool (straightener, curler, blow dryer, etc), we highly recommend applying a heat protectant. 

Will the curls revert after washing?

Yes! Your curly extensions will go back to their curly state after washing them. We highly recommend allowing the extensions to air dry after detangling them thoroughly.

Is the hair ethically sourced?

Yes! All Sleek by Hailey extensions are made with 100% ethically sourced cuticle-aligned human hair from donors. 

Can I dye or bleach this hair?

Yes! We highly recommend that a professional perform any coloring to keep the hair in its best condition.