Frequently Asked Questions
Everything you need to know about our molecular hair repair technology.
How does the K18 peptide actually 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 at the molecular level.
How long does shipping take for my order?
Standard shipping typically takes 3-5 business days within the contiguous United States. Expedited shipping options are available at checkout for faster delivery.
What is your return policy?
We offer a 30-day satisfaction guarantee. If you are not completely happy with your purchase, you can return the product within 30 days of delivery for a full refund, minus shipping costs.
Can I use K18 products on color-treated hair?
Yes, K18 is specifically designed to be safe and effective on color-treated, bleached, and chemically processed hair, helping to reverse damage caused by these treatments.
Are K18 products vegan and cruelty-free?
Absolutely. All K18 products are 100% vegan, cruelty-free, and Leaping Bunny certified. We do not test on animals at any stage of product development.
Which payment methods do you accept?
We accept all major credit cards (Visa, Mastercard, American Express), PayPal, Apple Pay, and Shop Pay installments for flexible payment options.