The manufacturer recommends beginning with a single application each evening. After one to two weeks, if your skin feels balanced — no tightness, no visible flaking, no stinging when you apply other products — you can try adding a morning use on days when the T‑zone feels particularly oily. Most people find once daily is enough.
Signs you are using it too often include a persistent tight sensation after rinsing your next cleanser, fine peeling around the nose or mouth, increased sensitivity to your usual moisturiser, or a sudden flare of redness. If any of these appear, drop back to every other evening for a week, then reassess. Pairing every application with a non‑comedogenic moisturiser significantly reduces the risk of over‑drying.
Because the formula contains active ingredients that dissolve sebum and pore debris, it can feel slightly tingling on first contact. That brief sensation is normal and should fade within a minute. If it lingers or turns into burning, rinse with water and pause use for a couple of days.