Frequently Asked Questions

Get answers to common questions about HD Glass Treatment Grey Hair Enhancement.

Results typically last four to eight weeks depending on hair porosity, lifestyle, and at-home care. Regular toning, sulfate-free shampoos, and weekly conditioning masks help extend vibrancy. We recommend touch-ups every six to eight weeks for optimal tone and shine maintenance.

Yes — the treatment is designed to be gentle and compatible with color-treated grey hair. We assess existing color and porosity first to custom-blend toners and avoid unwanted shifts. Your stylist will recommend timing between chemical services.

Yes — formulated specifically to neutralize yellow and brassiness in white or grey hair. Results vary by porosity and prior color, but most clients see noticeable neutralization after a single session.

Shampooing is generally safe 24 to 48 hours after treatment to allow toners to bond. Use lukewarm water and recommended sulfate-free products to preserve tone and shine, and follow at-home care instructions provided.

Yes — it pairs well with haircuts, blowouts, and many color services. We recommend consulting your stylist so we can schedule combined services safely and adjust formulas to protect both tone and integrity.

Use a purple or blue toning shampoo weekly, a gentle sulfate-free cleanser, and a hydrating mask once a week. Avoid harsh heat and chlorine to maintain tone and extend treatment results.