Semi-Permanent Hair Color Shampoo Formulation and Usage

Based on the product information, the formula you provided:

• Semi-Permanent Hair Color Shampoo Base 90%
• Semi-Permanent Hair Colorant (any color) 10%

is the correct mixing ratio recommended for these products.

You do not need to add water or any other ingredients to this mixture. The Shampoo Base is formulated to be mixed directly with the Colorant at the specified ratio.

How to Use:

This product is designed as a color-refreshing shampoo for already colored hair when the color starts to fade. It is not suitable for covering gray hair.

1. Mix the Semi-Permanent Hair Color Shampoo Base and the Semi-Permanent Hair Colorant at a 90:10 ratio.
2. Apply the mixture to your hair like a regular shampoo.
3. Leave on for 5-10 minutes.
4. Rinse thoroughly.

The color is expected to last approximately 7-10 washes.