Here's why:
* Lifting Power: This product is designed to lift a few shades, which is sufficient for blonde or light brown hair. Dark brown hair requires a much stronger lifting agent to achieve a noticeable blonde result.
* Potential for Brassiness: Using a color like Dream Blonde on dark brown hair is very likely to result in brassy, orange, or reddish tones rather than a true blonde.
* Damage: Attempting to lift too many levels in one process can cause significant damage to the hair, leading to dryness, breakage, and an uneven color result.
If you have brown hair and want to go blonde, it's best to consult a professional stylist. They can assess your hair's condition, determine the best approach for lifting the color, and minimize damage. They may recommend bleaching followed by a toner to achieve the desired blonde shade. They can also use products formulated for darker hair that can safely lift the hair to the desired level.
If you still plan to do it yourself, look for a product specifically formulated for dark hair and follow the instructions carefully. Be prepared for the possibility of brassy tones and the need for multiple applications or toning to achieve your desired result. It is always best to do a strand test first to see how the product reacts with your hair.