Nexxus Amino Bond Intense Bonding Treatment
- Leave-in bonding serum, do not rinse
- 5 fl oz bottle
- 5 amino acids and keratin protein (ProteinFusion)
- Up to 5 types of hair damage targeted
- 3 minutes to activate bond-building
- Fragranced, for damaged hair
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A leave-in bond repair serum for damaged hair that slots in after the matching shampoo and conditioner. It is built as the last step of a system, so results are framed around using all three.
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ASIN: B0CN9KT8B3Category: Hair Masks
Overview
A shower routine for damaged hair ends with this leave-in serum: worked through clean, damp hair after the matching shampoo and conditioner, its amino acids and keratin protein aim to rebuild broken bonds and strengthen strands.
Bond repair you do not rinse out makes it easy to use after every wash. The brand ties results to its full shampoo and conditioner system, which adds steps and products.
Who it's for
Color, heat or chemically damaged hair is the target, used on damp hair after washing. People who prefer a rinse-out mask or fragrance-free formulas should look elsewhere.
Pros and cons
- Leave-in, no rinsing needed
- Amino acids plus keratin protein
- Quick activation time
- Targets several damage types
- Designed around the full system
- Protein may stiffen sensitive hair
Performance notes
Proteins and amino acids fill weak spots in the hair fiber, so results build with repeat use on damaged lengths. Applying evenly on damp hair lets the serum reach the ends where damage is worst.
Specifications
| Brand | Nexxus |
|---|---|
| Capacity & performance | |
| Liquid Volume | 5 Fluid Ounces |
| Other details | |
| Hair Type | Damaged |
| Special Ingredients | Amino Acids, Keratin Protein |
| Scent Name | Fragranced |
| Item Form | Liquid serum |
| Product Benefits | Conditioning, bond repair |
| Suggested Use | Leave-in on clean, damp hair after Amino Bond shampoo and conditioner |
| Set Name | Amino Bond |
Frequently asked questions
Is the Nexxus Amino Bond Intense Bonding Treatment a rinse-out mask?
No. It is a repairing serum applied to clean, damp hair and the directions say do not rinse it out.
How do I use Nexxus Amino Bond treatment?
Start with the Amino Bond shampoo and conditioner, then work this serum evenly through clean, damp hair and leave it in.
How fast does Nexxus Amino Bond work?
The description says it activates bond-building technology in 3 minutes.
Is Nexxus Amino Bond treatment fragrance free?
No. The scent is listed as fragranced.