on Hair? How Long Does Henna Last
This page focuses on henna colour timelines, factors that affect longevity and aftercare tips to extend your results. For the full pros and cons of henna, see is henna good for hair. For shade options and what to expect at your appointment, read our complete henna guide. Considering making the switch? Start with our step-by-step transition plan.
Factors That Affect How Long Henna Lasts
Henna longevity varies based on hair porosity, grey percentage, wash routine and environmental exposure. Understanding these factors helps you maintain colour between appointments at our Chelsea, Notting Hill, South Kensington or Wimbledon salons.
Hair Porosity
Porous hair absorbs henna quickly but releases it faster. Low-porosity hair retains colour longer. Your colourist at our natural colour service will assess porosity and adjust processing time accordingly.
Grey Hair Percentage
Grey hair shows henna more vibrantly but may fade slightly faster. Most clients with significant grey need touch-ups every 4 to 6 weeks — see our dedicated grey coverage page for details.
Wash Frequency & Products
Sulphate-based shampoos strip henna faster. Clients using sulphate-free products maintain colour significantly longer. Pair with our organic hair treatments for maximum colour retention.
Sun & Heat Exposure
UV exposure and heat styling accelerate fade. Henna does provide some UV protection to the hair shaft — another benefit over chemical dye.
How to Make Henna Last Longer
Use Sulphate-Free Shampoo
The single most impactful change. Sulphate-free shampoo can extend your colour by 2 to 4 weeks. We recommend Oway's colour-protection range, available at all our London salon locations.
Wait 48 Hours After Application
Henna continues to oxidise and deepen for 48 hours. Avoid washing, swimming or excessive sweating during this period. The colour you see on day 3 is your true shade.
Cold Water Rinses
Hot water opens the cuticle and releases colour. A final cool rinse after conditioning locks in pigment and makes a noticeable difference to colour retention.
What Our Henna Clients Say
“My henna colour easily lasts 6 weeks. With sulphate-free shampoo, it stays vibrant the entire time.”— Samira
Frequently Asked Questions
How Long Does Henna Last?
Book Your Henna Colour Appointment
Experience the beauty and longevity of professional henna at any of our four London salons.