Frequently Asked Questions
Everything you need to know about your hair renewal journey.
How does the K18 peptide technology work?
Our patented K18Peptide™ travels into the innermost layers of hair to reach the core polypeptide chains, reconnecting broken bonds and restoring elasticity and strength in just 4 minutes.
Can I use conditioner before applying the Leave-In Molecular Repair Mask?
For best results, do not use conditioner before applying the mask. Conditioner can create a barrier that prevents the peptide from penetrating your hair shaft effectively.
What is your return policy?
We offer a 30-day satisfaction guarantee. If you are not completely happy with your results, you can return the product within 30 days of purchase for a full refund.
How long does shipping take?
Standard shipping typically takes 3-5 business days within the continental US. Express shipping options are available at checkout for faster delivery.
Are K18 products safe for color-treated hair?
Yes, our products are specifically designed to be safe for color-treated and chemically processed hair, helping to repair damage caused by bleaching and dyeing.
Are your products vegan and cruelty-free?
Absolutely. All K18 products are 100% vegan, cruelty-free, and formulated without sulfates, parabens, phthalates, or silicones.