• The KEURA Developer 10V is a salon-grade oxidizing lotion formulated with a mild 3% hydrogen peroxide strength (10-volume) for use in precision color services. When paired with a compatible permanent or demi-permanent color from KEURA or another professional line, this developer helps facilitate color penetration while minimizing lift—making it particularly suitable for achieving enriched shade depth, refreshing existing color, toning after lightening, or blending grey hair without unwanted over-lift.

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