Wella Koleston Perfect – Very Light Blonde Ash Brown 9/17
Experience balanced, natural-looking color with Koleston Perfect, the first professional hair color to feature breakthrough technology.
- Pure, balanced color with natural depth and shine
- ME+ technology: up to 60x less likely to develop a new allergy to hair color* (for people not allergic to hair colorants)
- Reduces formation of free radicals for improved hair quality
- Simple 1:1 mixing ratio for easy application
- Up to 100% grey coverage
- Up to 5 levels of lift
| Feature | Detail |
|---|---|
| Color Type | Very Light Blonde Ash Brown |
| Formula | Professional, 1:1 mix ratio |
| Grey Coverage | Up to 100% |
| Lift Level | Up to 5 levels |
* For people not allergic to hair colorants. Although the risk of developing a new allergy is reduced, there remains a risk of allergic reaction that can be severe. Always perform an Allergy Alert Test 48 hours before each coloration. Follow safety instructions and consult www.wella.com/kolestonperfect.
FAQ
What makes ME+ technology different from other hair color formulas?
ME+ technology reduces the likelihood of developing a new allergy to hair color by up to 60 times for people not initially allergic to hair colorants. However, allergic reactions can still occur, so an Allergy Alert Test 48 hours before application is recommended.
How does this shade perform on grey hair?
The Very Light Blonde Ash Brown 9/17 provides up to 100% grey coverage, delivering a natural, balanced result with depth and shine.
Is the color suitable for all hair types?
This formula is designed for professional use and works best on a variety of hair types. Results may vary depending on original hair color and condition.

Emily Berry –
The color turned out exactly as expected—light blonde with a soft ash tone. It covers grey well and gives a natural look. I did the allergy test as advised and had no issues. The application was smooth and the shine is great.
Lillian Hemmings –
I’ve used several hair dyes before, but this one feels more balanced. The ash tone is subtle and doesn’t look too artificial. Coverage on my grey roots was excellent, and the hair feels healthier after the treatment.
Virginia Morgan –
The ME+ feature gave me peace of mind since I’ve had allergic reactions in the past. The color is light but not too pale. It blends well with my natural hair and has a nice shine without being shiny.
Theresa Buckland –
Easy to mix with a 1:1 ratio. The result is consistent and looks natural. I didn’t have any irritation during or after application. The grey coverage is impressive, especially on the top of my head.
Sam Hodges –
This shade is perfect for a soft, modern look. The color depth is just right—doesn’t look too light or too dark. My stylist recommended the allergy test, and I’m glad I followed it. Hair feels stronger and more vibrant.