At Youngsee, we specialize in premium human hair extensions that deliver flawless, natural-looking results. Whether you choose Hot Fusion or Cold Fusion extensions, proper application and removal are key to maintaining healthy hair and getting the most from your extensions. This step-by-step guide will walk you through both processes.
Part 1: How to Apply Cold Fusion Extensions (Ultrasonic Bond Method)
What You’ll Need:
✔ Cold fusion polymer bonds
✔ Ultrasonic applicator tool
✔ Sectioning clips
✔ Comb
Step-by-Step Application:
- Prep Hair
Clean, dry hair works best (no heavy products).
- Section & Isolate
Take small sections (¼ inch) and clip the rest up.
- Attach Bonds
Place a polymer bond around natural hair + extension.
Use the ultrasonic tool to vibrate and seal the bond (no heat).
The bond hardens instantly.
- Blend & Style
Repeat in a brick-lay pattern for natural volume.
Pro Tip:
Bonds are lighter than hot fusion—great for fine hair!
Avoid heavy oils near bonds to prevent slippage.![]()
Part 2: How to Remove Cold Fusion Extensions
What You’ll Need:
✔ Rubbing alcohol or bond release spray
✔ Fine comb
✔ Conditioning treatment
Step-by-Step Removal:
- Loosen Bonds
Apply alcohol or remover spray to dissolve the polymer.
- Gently Twist Of
After 2-3 minutes, twist the bond until it slides off.
- Hydrate Hair
Follow with a moisturizing mask to restore hair health.
Hot vs. Cold Fusion: Quick Comparison
| Step | Hot Fusion | Cold Fusion |
| Application | Heat clamp melts keratin | Ultrasonic tool bonds polymer |
| Removal | Requires solvent | Alcohol/spray dissolves bond |
| Best For | Thick/strong hair | Fine/damaged hair |
| Damage Risk | Moderate (heat) | Low (no heat) |
Final Tips for Long-Lasting Extensions
Wash gently (sulfate-free shampoo).
Avoid tugging bonds when brushing.
Schedule maintenance every 8-10 weeks.