Yes, purple shampoo is generally beneficial for maintaining the tone of highlighted hair. Highlights, especially blonde or light brown, are prone to brassiness, which refers to unwanted yellow or orange tones. Purple shampoo works by depositing violet pigments onto the hair, which counteract these warm tones and help keep your highlights looking cool-toned, bright, and fresh. Using it regularly, but not excessively, can extend the life of your color between salon visits. Pay attention to how your hair responds; if it starts to look dull or develops a purple tint, reduce the frequency of use. Always follow with a hydrating conditioner, as purple shampoo can sometimes be drying.

The 'best' shampoo for blonde highlights is a subjective matter depending on your hair type and desired result, but a key element is a shampoo specifically designed to neutralize brassiness. These shampoos are typically purple or blue-toned. Look for formulas that are sulfate-free to prevent stripping the hair of its natural oils and color. Consider your hair's specific needs – if it's dry, opt for a moisturizing formula; if it's fine, choose a lightweight option that won't weigh it down. Observe how your highlights react and adjust your choice accordingly. Always follow with a conditioner to replenish moisture and ensure your highlights remain soft and manageable.

Hairdressers often recommend purple shampoos that effectively neutralize brassy tones without overly drying the hair. They look for formulas that deposit a sufficient amount of pigment to correct unwanted warmth, but also contain hydrating ingredients to maintain hair health. Factors they consider include the overall condition of your hair, your lifestyle, and the specific tone of your highlights. They might suggest diluting the shampoo with your regular shampoo or using it less frequently to achieve the desired result without causing dryness or unwanted purple hues. Ultimately, a hairdresser's recommendation will be tailored to your individual hair needs and color goals.

There are several reasons why your hairdresser might advise against using purple shampoo. One common reason is overuse. If used too frequently, purple shampoo can actually dull your highlights, create a purple tint, or dry out your hair. Another reason might be the specific tone of your highlights. If your highlights are already very cool-toned, purple shampoo could make them appear ashy or even gray. Finally, certain types of highlights or toning processes may not react well to purple shampoo. Your hairdresser likely has a thorough understanding of your hair's color and condition, and their advice is based on achieving the best long-term results for your specific situation. Trust their expertise and follow their recommendations for maintaining your highlights.