Joico Defy Damage Sleepover Overnight Treatment 2 Pack
- No-rinse overnight leave-in
- Arginine and keratin to rebuild bonds
- Damaged hair, split ends and breakage
- Unscented
- Cruelty free
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A no-rinse overnight treatment that softens and smooths damaged hair while you sleep. It is a leave-in, so anyone wanting a rinse-out mask should look elsewhere.
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ASIN: B09GZJYKYFCategory: Deep Conditioners
Overview
Arginine and keratin work overnight in Joico Defy Damage Sleepover, a no-rinse treatment that aims to rebuild broken bonds and replenish damaged hair. It is applied before bed and left in without weighing hair down.
Repair that happens while you sleep, with no rinse step, is the reason to buy. Directions on how much to use are not listed, which matters for fine hair.
Who it's for
Bleached or heat-styled hair with split ends benefits most. Those with healthy, oily hair have little need for a bond-repair leave-in.
Pros and cons
- No rinse needed
- Bond-building arginine and keratin
- Softens and adds shine
- Application amount not listed
- May transfer to pillowcase
- Leave-in only, no rinse option
Performance notes
Left on for hours, the treatment has time to soak into porous, damaged hair, which is where arginine and keratin do their work. Results depend on spreading it evenly through the lengths and ends.
Specifications
| Brand | Joico |
|---|---|
| Dimensions & fit | |
| Item Weight | 3.38 ounces |
| Capacity & performance | |
| Liquid Volume | 3.38 fluid ounces |
| Age Range Description | Adult |
| Construction & materials | |
| Material Features | Cruelty Free |
| Included components | |
| Package Type Name | Bottle |
| Unit Count | 6.76 Fl Oz |
| Other details | |
| Hair Type | Damaged |
| Special Ingredients | Arginine, keratin |
| Hair Conditioner Type | Leave-In Hair Conditioner |
| Scent Name | Unscented |
| Number Of Items | 2 |
| Product Benefits | Reduces split ends, softens and smooths, boosts shine |
| Additional Features | Nourishing |
| Item Form | Liquid |
Frequently asked questions
How much product is in the Joico Defy Damage Sleepover pack?
Two bottles of 3.38 fl oz each, 6.76 fl oz in total.
Do I rinse out Joico Defy Damage Sleepover?
No. It is a no-rinse leave-in treatment used overnight.
Does Joico Defy Damage Sleepover have a scent?
The specs list it as unscented.
Is Joico Defy Damage Sleepover cruelty free?
Yes. The listing marks it cruelty free.