K18 Leave-In Molecular Repair Hair Mask is a no-rinse treatment that the brand says repairs damage from bleach, color and heat in four minutes.
Key features
- Leave-in, 4-minute treatment
- Patented K18PEPTIDE
- Free from parabens, silicone, sulfates and alcohol
- Works on all hair types
Who it is best for
Bleached, colored or heat-damaged hair where fast, no-rinse repair is wanted.
Things to consider
- Follow the directions closely to get results.
- Premium price.
- Ratings are good but not perfect.
How to use it
After shampooing, without conditioner, towel-dry to damp, apply about 1 mL, wait four minutes, and style without rinsing.
Where to buy
Check the current price, size and customer reviews on Amazon before you buy. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Frequently asked questions
Do I rinse it out?
No. It is a leave-in treatment.
How much should I use?
About 1 mL, a dime-size amount, per use.
Can I use it with Olaplex?
Many people use both. Follow each product’s directions.
Product details come from the manufacturer’s listing and customer reviews and can change. This is general information, not medical advice.