* Lift and Tone: The blonde color will lift the natural brown shade, but the extent of the lift will depend on the strength of the developer used with the hair color. It will also deposit golden tones.
* Color Result: You can expect the hair to become a shade of warm brown or dark blonde with golden undertones. It's unlikely to achieve a true dark golden blonde in one step, especially if the chestnut brown has been previously colored.
* Warmth: The result will likely be warm, meaning it will have noticeable golden, yellow, or orange tones.
* Highlights: If the application isn't even, it could create some subtle highlighting effects.
* Root Lift: If you're applying it to the roots, they will lift more easily due to the heat from the scalp. This could lead to slightly lighter roots compared to the rest of the hair.
* Damage: The lightening process can cause some damage to the hair, especially if a high-volume developer is used. It's important to use a good conditioner and consider a deep conditioning treatment afterward.
To achieve a lighter blonde, you might need to use a higher developer and/or more than one application or bleaching process. For best results, I highly recommend consulting a professional hair colorist. They can assess your hair and help you achieve your desired color safely and effectively.