I found several search results related to shampoo colorants, but they provide different types of information. Here is a summary of each result:

1. R+Co Gemstone Color Shampoo: This shampoo is designed to control frizz, repair and preserve hair color, and is vegan and cruelty-free. It is formulated without harmful ingredients such as parabens and sulfates. It is recommended for color-treated hair, and it comes with a matching conditioner.

2. 3-in-1 Color Depositing Shampoo + Conditioner - Redilicious: This shampoo and conditioner combo is designed to deposit color onto hair while also conditioning it. It contains Hydrolyzed Quinoa, Keratin Amino Acids, and Verbascum Flower Extract. It is recommended for color-treated hair that is dull, faded, or damaged.

3. Ivnil Dark Brown Hair Dye Shampoo for Gray Augeas Instant Color 3 in 1 Women and Men Augeo, Herbal Ingredients 100% Grey Coverage 500ML 16.9 Fl Oz: This shampoo is designed to dye hair dark brown and cover gray hair. It contains herbal ingredients and claims to provide 100% gray coverage. It is recommended for both women and men.

4. How to Naturally Color Handmade Soap + Ingredients Chart: This article provides information on how to naturally color handmade soap using herbs, flowers, clays, and other natural ingredients. It includes an extensive list of natural soap colorants and how to use them.

5. Davines International FAQ: This website provides information on the ingredients used in Davines hair care products. Some of their products contain Slow Food ingredients, which are produced in the Mediterranean area by Slow Food Foundation for Biodiversity. They also have a specific active ingredient that combines the promotion of gastronomic culture with the protection of environmentally sustainable productions.

6. The 7 Best Temporary Hair Color Products, According to an Expert: This article provides information on temporary hair color products that can be used to add color to hair without causing permanent damage. The products include sprays, gels, and mousses, and they come in a variety of colors.

In summary, the search results provide information on different types of shampoo colorants, including those designed to preserve hair color, deposit color onto hair, dye hair, and add temporary color. The ingredients used in these products vary, from herbal ingredients to synthetic ones. It is important to choose a product that is suitable for your hair type and color, and to read the ingredients list carefully to avoid any harmful chemicals.