Is Onyx really formaldehyde-free?
Yes. Onyx contains no formaldehyde, sulphates or parabens. It's built on a base of hydrolyzed collagen, keratin and plant oils, and is safe for color-treated and damaged hair.
How long do results last?
A high-gloss, sleek finish that holds for 3 to 6 months, depending on hair type and aftercare. Maintain results with Cocochoco sulfate-free shampoo and regular use of the Onyx Mask.
Do I need to wait 3 days before washing?
No. Onyx has no wait time — you can wash, tie up or style your hair immediately after treatment, unlike traditional keratin formulas.
Can I use this at home, or only in a salon?
Onyx is professional-strength and formulated for both salon and at-home use. Professional training is strongly recommended for the best results, especially the flat-ironing stage.
What's the difference between smoothing and full straightening?
One formula, three results. Shorter processing time gives a botox-style smoothing effect; longer processing delivers full straightening — you control the outcome.
Do you ship internationally?
Yes, Onyx ships to salons and customers in 50+ countries. Buy 3, Get 2 Free orders also qualify for free shipping.
What is the return policy?
14-day satisfaction guarantee on unopened bottles. If you have any questions before you order, our team of stylists is on hand to help you choose the right processing time for your hair.
