Is Keratin Color Dark Blonde 7.0 safe for use on chemically treated or sensitive hair?

The dye is designed for normal to over-processed hair and works well on previously dyed strands, but because it contains ammonia and p-phenylenediamine, it may irritate very sensitive scalps; a 48-hour patch test is strongly advised.

What role does keratin play in the Keratin Color Dark Blonde 7.0 formulation?

Keratin, a structural protein, fills gaps in the cuticle created during the coloring process, reinforces the fibre, and helps the colour adhere more evenly, resulting in smoother texture and added shine.

How often should the color be applied and does the formula include any controversial ingredients?

For optimal results most users refresh the colour every 4-6 weeks to cover regrowth; the formula includes ammonia, p-phenylenediamine (PPD) and fragrance, which are common in permanent dyes and considered harsh by some but are approved for use in the EU.

Henkel, Schwarzkopf

Kératine Color Blond Foncé 7.0

Hair

Product Insights

Schwarzkopf Keratin Color Dark Blonde 7.0 is a permanent hair dye formulated to deliver a dark-blonde shade (tone 7.0) with a keratin-enriched base. The addition of keratin helps reinforce the hair fibre, giving a glossy finish and reduced breakage compared with standard dyes. However, the product also contains typical hair-color chemicals such as ammonia, PPD and fragrance, which can trigger allergic reactions or scalp irritation in sensitive users, so a patch test is recommended before full application.

Comparative Analysis

Positioned as a keratin-enriched dark-blonde permanent hair dye, Schwarzkopf's Keratin Color 7.0 targets consumers seeking salon-grade coverage and lasting shine while differentiating itself from standard colorants by fortifying the hair shaft during the coloring process.

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