PPD (para-phenylenediamine) is used in permanent hair dyes to make color long-lasting and natural, but it’s also a leading cause of allergic reactions.

Yes. Inochroma products are PPD-free (and free from similar chemicals) and are a safer option for sensitive users while still providing effective gray coverage. Perform a 48-hour patch test if you have sensitive skin.

Inochroma is semi-permanent and lasts about 2–4 weeks on natural grey hair.

Apply on dry hair before taking a shower for best results.

No worries—the cream may look very dark, but only a small amount of dye transfers. It’s buildable coverage, so you can control darkness with multiple applications.

It may take up to 3 applications for significant darkening, especially on thick or completely white hair. For faster results, pre-treat with the Inochroma Grey Hiding Booster Serum.

The Booster Serum helps the pigment bind to hair follicles, reducing the number of applications needed for a very dark effect. Apply the serum on dry hair, let it dry completely, then use the Grey Hiding Treatment as normal.

Yes. Use gloves and wear old clothes. To help prevent skin tinting, apply a thin layer of Vaseline along the hairline and behind the ears.

The pigment naturally darkens from light brown to black when exposed to oxygen. The top can darken if the container wasn’t fully sealed. It’s still effective and safe as long as it’s not completely black.

Yes. Results may vary depending on your previous shade and the dye you’re applying. We recommend a strand test first.

The Inochroma Grey Hiding Treatment is designed for users sensitive to other dyes and is PPD-free. Please perform a 48-hour patch test before full application.