Using Semi-Permanent Hair Color Shampoo Base on Uncolored Hair

Based on the product information for the Semi-Permanent Hair Color Shampoo Base and the Semi-Permanent Hair Colorants, this system is primarily designed for refreshing color on hair that has already been colored.

• Can someone with uncolored hair use it? While you can use it on uncolored hair, the results may be very subtle, especially on darker hair. These products are formulated to deposit color onto hair that is more porous due to previous coloring or lightening. Virgin (uncolored) hair may not absorb the color as effectively, resulting in little to no visible change, particularly with lighter or pastel shades.
• Will the hair color change according to the mixed color? The product is designed to deposit the color you mix. However, the final visible result will heavily depend on your starting hair color. On uncolored hair, the true shade of the colorant might not show through clearly, or it might only add a slight tint.
• How many washes does it take to change color? The color change happens during the washing process itself. You apply the mixed shampoo, leave it on for the recommended time (typically 5-10 minutes), and the color is deposited. It's not about multiple washes to achieve the color, but rather how many washes the deposited color lasts. The product description indicates the color typically lasts for about 7-10 washes before fading.