K18 by Khairpep
Khairpep is amazing. It regenerates the disulfide bonds in the cortex brining your hair back to almost 82% virgin hair.
This includes even if it is broken from previous services, UV damage, water and styling damage.
Another benefit is it is clinically proven to reduce color fade. It makes your extension hair feel seamless with your own.
My experience with k18 has been with and without extensions...both ways make your hair feel more manageable and like your conditioner actually did its job. It is super lightweight even on the finest hair.
It's a progressive treatment so you use it 3-4 times after the initial service. It only takes 4 minutes on towel dried hair that has been freshly shampooed and no conditioner.