Famous Is Olaplex Shampoo Safe For Color Treated Hair Ideas. Because purple is opposite to yellow on the color wheel (yes, that color wheel, which you were likely introduced to in. How long does it take for the product to work if used twice daily?

Web purple shampoo's effectiveness all comes down to simple color theory. How was this product tested before launch? It works on a molecular level by restoring the hair's broken disulfide bonds which can result from harsh chemical treatments like bleaching and coloring.