Best shampoo bar for color-treated hair: preserve color longer
The best shampoo bar for color-treated hair is FOAM's Forest Treat, a sulfate-free shampoo bar with a gentle coconut-derived surfactant that cleanses without stripping color pigments. Wash with cool water 2-3 times a week and always finish with cold water to close the cuticle and lock in the color.
Color-treated hair is an investment. And the single biggest threat to color longevity is the wrong shampoo. Sulfates open the cuticle wide and strip color pigments with every wash, causing the color to fade quickly. A sulfate-free shampoo bar cleanses with mild surfactants that respect both the hair's moisture balance and the integrity of the color. Read more about the full routine in our complete guide to color-treated hair.
Why sulfate-free is essential for color-treated hair
Coloring opens the cuticle and pushes dye into the hair shaft's cortex. The cuticle then closes again, but never as tightly as before. This makes color-treated hair more porous and prone to dryness. Sulfates open the cuticle even further and strip color pigments, wash after wash. Learn more about shampoo bars for color-treated hair for a more in-depth overview.
Forest Treat: gentle cleansing that preserves color
Forest Treat cleanses with a sulfate-free, gentle coconut-derived surfactant that doesn't strip color pigments. Organic coconut oil moisturizes porous, color-treated hair, blueberry seed oil protects against external stressors with antioxidants, and lactic acid regulates pH and closes the cuticle after washing for longer-lasting color.
Pair with a conditioner bar for complete color protection
Color-treated hair needs conditioner with every wash. Always follow up with a conditioner bar for color-treated hair to help close the cuticle and lock in both moisture and color pigments.
The Editor’s Note: Never wash color-treated hair with hot water. Hot water opens the cuticle and speeds up color fading. Lukewarm or cool water preserves color and leaves strands shiny.
How to choose the right shampoo bar for color-treated hair
| Hair type | What you need | What Forest Treat offers |
|---|---|---|
| Freshly colored hair | Gentle cleansing, color protection | Mild surfactant preserves color pigments |
| Bleached hair | Deep moisture, repair | Coconut oil + blueberry seed oil moisturize damaged hair |
| Highlights | Sulfate-free, pH balance | Lactic acid closes the cuticle and preserves color |
| Color-treated and dry hair | Moisture + color protection | Grapeseed oil softens without weighing hair down |
Find the right shampoo bar for your hair type in our guide to the best shampoo bars.