What result can I realistically expect on my current hair colour?

Because this is a botanical colour that deposits pigment without bleaching, the final shade is always a blend of the herbal mix and your own hair’s base tone. On naturally light blonde to medium blonde hair, the golden-blonde nuances will be most visible, adding warmth and a glossy, slightly thicker-looking finish. On dark blonde or light brown hair, you will see a subtle golden sheen and a shift toward warmer tones, but the overall depth will not change dramatically. On medium to dark brown hair, the effect is usually a barely-there warm glint in sunlight rather than an obvious colour change.

Hair porosity plays a big role. Porous strands — whether from previous bleaching, heat styling, or sun exposure — absorb more lawsone and can take up a stronger, sometimes slightly coppery tone at first. Less porous, virgin hair may need a longer processing time or a second application to build up the same intensity. If you have previously coloured hair with oxidative dye, the henna will coat over that colour; it will not strip or correct it. Any unevenness from old highlights or regrowth will still show through, just softened by the golden veil.

The product description explicitly states that botanical colour does not behave like bleach and will not lighten dark hair dramatically. For this reason, a strand test on a hidden section is the only reliable way to preview the result on your specific hair before committing to a full application.