The purple booster works the way violet shampoo works on blonde hair: violet sits opposite yellow on the colour wheel, so a thin violet tint optically cancels yellow undertones. The effect is immediate and real — and, being optical, it fades as the pigment washes away.
Used before photos or a big meeting, it is the fastest “result” in the entire range. Used alone long-term, it will disappoint, because it does not remove the underlying stain. ONOSONIC positions it as a booster and that is exactly how to use it: PAP+ paste or strips do the whitening, the booster handles the moments that matter.
Transparency note: ONOSONIC WHITE TEETH Expert® is our sister brand — Oral Care Guide UAE and ONOSONIC share the same publisher. We apply the same testing criteria to our own products as to every other brand, and we flag this relationship on every ONOSONIC review so you can weigh it for yourself.