Gwyneth Paltrow's colorist explains the smudge technique for blending grays

Gwyneth Paltrow's colorist uses a "smudge" technique to blend grays into her blonde hair. This method uses demi-permanent color to create depth and a lived-in look, offering low-maintenance gray coverage while keeping highlights bright. The smudge technique is versatile, suitable for various hair colors and ages, and provides a softer grow-out than traditional methods.