The best shampoo for white hair is often a moisturizing and brightening formula. Look for shampoos specifically designed for gray or silver hair, as these often contain ingredients to combat yellowing and add shine.

To keep white hair white, use a purple shampoo regularly to neutralize yellow tones. Also, protect hair from sun exposure and hard water, which can contribute to discoloration.

Yes, purple shampoo is commonly used on white hair to counteract brassy or yellow tones. The purple pigment helps to neutralize unwanted warmth, resulting in brighter, whiter hair.

Purple shampoo should be used on gray hair about once or twice a week, or as needed, to maintain a bright, silver tone. Overuse can lead to a purple tint, so monitor your hair's color and adjust frequency accordingly.