This is the question people ask right before they buy, and it's the right one — because the answer determines whether the box you're looking at is enough.
Short version: most of the day, most days, for at least two to three months. Here's the detail.
Hours per day
The common guidance is somewhere in the range of 12 to 24 hours a day. In practice almost nobody manages a clean 24, and you don't need to.
What tends to work in real life:
- On overnight — this is the easy win. You're lying still, nothing is rubbing, and it's eight hours you didn't have to think about.
- On during the day under clothes — where it also does its second job, buffering the scar from your waistband.
- Off for showering and a short breather — skin under an occlusive sheet appreciates some air. Most people take it off to wash, let the area dry fully, and put it back.
If you're starting from zero, build up. A few hours on the first day, a bit more the next. Going straight to all-day wear on skin that isn't used to it is how you end up with irritation and quit in week one.
Weeks and months
The usual minimum quoted is 8 to 12 weeks of consistent daily use. Plenty of people continue to six months.
The reason for the long runway is that a scar keeps remodelling for roughly twelve to eighteen months after surgery. During that window the tissue is still actively reorganising, which is exactly when a stable, hydrated environment can influence how it settles. Once a scar has fully matured, the opportunity narrows considerably.
So the practical framing is: start as soon as the incision is fully closed, and keep going through the window while it's still open. For when that is, see when you can safely start.
How much product is that, really?
Worth doing the arithmetic before you buy, because running out mid-course is the single most common reason people stop.
A silicone strip is reusable. You rinse it in cool water, let it air dry, and reapply. A strip typically lasts somewhere between one and two weeks of daily wear before it stops sticking cleanly and needs replacing — sooner if you're in heat, sweating, or washing it often.
At roughly that rate, a twelve-week course needs somewhere in the region of six to twelve strips per scar. A 10-pack covers most of a standard course for a single C-section line. If you're treating a longer or irregular scar, or more than one area, a roll stretches further because you cut only what you need.
What if you miss days?
Nothing dramatic. You haven't ruined it.
This isn't a course of antibiotics where a gap breaks the whole thing. Missing a day, or a bad week, means you've had less cumulative wear time — that's all. Pick it back up.
What genuinely does undermine it is the pattern of stopping entirely at week three because nothing visible has happened yet. At week three, nothing visible should have happened yet. That's not failure, it's the timeline.
How do you know when you're done?
There's no bell. You're generally looking for the scar to settle into a state that stops changing — flatter, softer, paler, and holding steady over several weeks rather than still shifting.
A reasonable approach is to reassess at the three-month mark. If it's still improving, carrying on costs you very little. If it has clearly plateaued and you're happy with where it landed, you can stop. If it has plateaued and you're not happy, that's the point to ask your doctor about other options rather than simply doing more of the same.
A note on comfort
Long-duration wear only works if it's actually comfortable, which means:
- Clean, completely dry skin before application — no creams, oils or lotion underneath
- Smooth it on without stretching the skin
- Rinse the strip and let it air dry fully before it goes back on; a damp strip won't stick and traps moisture against the skin
- If you get persistent redness, itching or a rash that doesn't settle, take a break and speak to your doctor — some people react to the adhesive
The practical mechanics of fitting this around showers and sleep are covered in this guide.
Related reading
- Do silicone scar sheets actually work? An honest answer
- Scar sheets or scar tape? How to tell which one you need
General information, not medical advice. Timings vary with your own healing — check with your doctor or midwife about what's right for your incision.