Revlon Colorsilk #40 Medium Ash Brown Permanent Hair Colour
Revlon Colorsilk #40 Medium Ash Brown delivers a sophisticated, cool-toned medium brown that's ideal for those who prefer a neutral-to-cool palette. The ammonia-free permanent formula provides 100% gray coverage with 3D Color Technology for natural, multi-tonal ash brown results. Infused with keratin and amino acids, it conditions the hair while colouring for a silky, healthy finish lasting up to 8 weeks.
Key Features
- Ammonia-Free Formula — gentle on hair and scalp — no harsh chemical smell
- 100% Gray Coverage — thoroughly covers even the most resistant gray and white hair
- 3D Color Technology — blends light, medium, and dark tones for natural-looking, multi-tonal results
- Keratin and Amino Acid Conditioning — strengthens and conditions the hair while colouring
- Lasts Up to 8 Weeks — long-lasting, fade-resistant colour that stays vibrant wash after wash
- Complete Kit Included — each pack includes colour developer and conditioning treatment
Product Specifications
| Brand | Revlon |
| Range | Colorsilk |
| Shade Number | 40 |
| Shade Name | Medium Ash Brown |
| Colour Tone | Cool ash, medium brown |
| Coverage | 100% gray coverage |
| Duration | Up to 8 weeks |
| Formula | Ammonia-free |
| Kit Contents | Colourant, Developer, After-Colour Conditioner |
About Revlon Colorsilk
Revlon Colorsilk has been trusted for over 85 years as one of the world's leading at-home hair colour brands. The Colorsilk ammonia-free formula was developed to deliver salon-quality results without compromising hair health. Using patented 3D Color Technology, each shade delivers multi-tonal, natural-looking colour with 100% gray coverage. Available in a full spectrum of shades, Revlon Colorsilk is a top choice for home colourists worldwide.
Frequently Asked Questions
- What makes #40 Medium Ash Brown different from golden or warm browns?
- #40 Medium Ash Brown has cool undertones, which means it leans slightly grey-blue rather than warm gold or red. This gives the hair a cooler, more muted appearance — ideal for neutralising brassiness or warm tones in the hair.
- Will #40 help neutralise brassy tones?
- Yes. The cool ash undertones in #40 can help neutralise unwanted warm or brassy tones, particularly in hair that has faded from previous colour treatments. It is especially useful on medium brown hair.
- How does #40 compare to #50 Light Ash Brown?
- #50 is lighter overall, resulting in a lighter medium-to-light ash brown. #40 is slightly deeper, sitting firmly in the medium range. Both have cool ash undertones.
FAQs
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We accept returns within 30 days of delivery for damaged, defective, incorrect, or expired items. US return shipping is free with no restocking fee; Canadian customers cover return shipping. Refunds are processed within 10 business days of approval. See our Refund Policy for full details.