Silicone scar sheets for sternotomy scars are adhesive silicone strips cut to fit the full length of a healed median sternotomy incision, worn daily to flatten, soften, and fade the raised, often reddened line left after open-heart surgery. Sternotomy scars typically run 6 to 10 inches straight down the center of the chest and sit right under a bra line, seatbelt, or shirt collar, so sizing, adhesion, and wear schedule matter more here than for a short surgical scar. This guide breaks down the sizing, timing, and daily routine that actually work for a chest-length scar in 2026, plus where a kit like Rejûvaskin's Scar Heal Kit fits into that routine.

Why silicone scar sheets matter for sternotomy scar patients

A median sternotomy scar sits directly over a bone that moves every time you breathe, cough, or reach overhead, and that constant tension is a known driver of hypertrophic scarring. International scar management guidelines have listed silicone sheeting as first-line, noninvasive therapy for both preventing and treating hypertrophic and keloid scars for years, and a sternotomy line is exactly the kind of high-tension scar those guidelines are written for.

This scar also crosses clothing lines most other surgical scars don't: bra underwire, seatbelts, necklaces, and collared shirts all rub across it daily. A sheeting routine built for a 2-inch appendectomy scar doesn't hold up here — you need a strip long enough to cover the full incision without a seam splitting your coverage in the middle of the chest.

How to treat a sternotomy scar with silicone sheeting

The sequence below moves from the free, manual steps every sternotomy patient should follow first, into where a purpose-built kit saves time once you're past the first few weeks.

Confirm your incision is fully closed before applying sheeting

Sheeting goes on skin, not on an open wound — applying it too early traps moisture and can slow healing instead of helping it.

• Wait until staples or sutures are removed and the site is fully closed with no scabbing
• Confirm with your surgeon before starting if there's any weeping, drainage, or open area
• Skip sheeting directly over old chest tube or drain sites until those are also closed
• Watch for any redness spreading outward, which means the site isn't ready yet
• Start sheeting only once the whole scar line is dry to the touch

Measure your scar and choose the right sheet size

A sternotomy scar rarely matches a pre-cut square sheet made for a small surgical incision, so measuring first prevents buying the wrong size twice. Rejûvaskin's guide on how to choose the right silicone scar sheet size walks through the same measuring steps in more detail.

• Measure the scar end to end while standing upright, not lying down
• Add roughly half an inch of overlap on each end for full coverage
• Note if the scar widens near the top, which may call for a wider strip
• Choose long strip sizes such as 1" x 12", 1.5" x 9", or 1" x 22" rather than small squares
• Mark the scar's midpoint so you can center the sheet the same way each time

Clean and dry the skin over the sternum daily

Skin under a bra line or shirt collar traps more sweat than skin elsewhere, so this step gets skipped at your own risk.

• Wash with a mild, fragrance-free soap before each application
• Pat the area completely dry — silicone won't stick to damp skin
• Remove any lotion or sunscreen residue before reapplying the sheet
• Check the scar for redness, breakdown, or irritation before covering it again
• Give the chest an extra minute to air-dry given how much this area sweats

Apply the sheet flat against the full scar length

A sheet that lifts at the edges stops working days before you notice it's not sticking anymore.

• Press from the center of the scar outward to push out air bubbles
• Avoid stretching the sheet tight across the sternum, where breathing motion is highest
• Round off sharp corners with scissors to cut down on edge lifting
• Reposition daily rather than leaving a curling sheet in place overnight

Wear the sheet 12 to 23 hours a day and rinse it nightly

Most of the benefit from silicone sheeting comes from consistent hours worn, not from any single application.

• Rinse the sheet each night with mild soap and lukewarm water
• Air-dry it flat on a clean surface before the next use
• Keep a second sheet in rotation so one is always ready while the other dries
• Watch for adhesive fatigue — curling edges or dullness mean it's time to replace it
• Track total daily wear hours for the first month to build the habit

Handle wire irritation and bra-line friction points

Sternal wires and bra underwire are two friction sources unique to this scar location, and both will undo a good sheeting routine if ignored.

• Switch to a soft-front or wireless bra during the sheeting phase
• Add a thin layer of soft cloth between underwire and any sheet edge if you can't switch bras
• Loosen a seatbelt strap or use a cover when it crosses the scar directly
• Reinforce lifting edges with surgical tape rather than replacing the whole sheet early
• Note any new tenderness near old wire sites and mention it at your next follow-up

Switch to a scar gel or cream once the sheeting phase ends

Sheeting handles the main scar line well, but the collarbone notch and any spot where the scar curves are harder to keep covered flat. That's where Scar Esthetique Silicone Scar Cream comes in as a second step rather than a replacement.

• Apply a thin layer of scar cream twice daily to spots sheeting won't stay flat on
• Keep sheeting on the main scar line while adding cream to the edges
• Track color and texture change over 8 to 12 weeks, a typical scar remodeling window
• Pair cream use with regular moisturizing to prevent the healing line from drying and cracking
• Keep sunscreen in the routine anytime the scar is exposed, since UV exposure darkens healing scar tissue

Comparing your options for a sternotomy scar

Verdict: for a first-time sternotomy scar in 2026, start with a full-length Scar Heal Kit strip, then layer in Scar Esthetique cream once you hit the collarbone notch or scar edges the sheeting won't sit flat on.

Sized for a sternotomy scar

Scar Heal Kit - 1" x 22"

One long strip plus gel, built to cover a full 6 to 10 inch chest incision in one piece.

$104.95

Scar Heal Kit - 1.5" x 9"

A wider strip for scars that widen near the top of the chest.

$93.95

Scar Heal Kit - 1" x 12"

A shorter strip option for scars on the lower end of the typical sternotomy range.

$93.95

Common mistakes sternotomy scar patients make

• Applying sheeting before the incision is fully dry — this traps moisture instead of protecting the scar and can irritate sensitive, newly closed skin.
• Cutting the sheet shorter than the scar — any uncovered inch fades and flattens on a different timeline than the rest, leaving a visibly uneven result.
• Wearing an underwire bra directly against a fresh sheet — the edge lifts within hours and the sheet stops doing its job long before you notice.
• Skipping sun protection over the healing line — a sternotomy scar exposed through an open collar darkens faster than a covered one, undoing months of fading.
• Stopping after two or three weeks — silicone sheeting works over months, not days, and quitting early is the most common reason patients say sheeting "didn't work."

FAQ

One last thing

If your sternotomy sheet keeps lifting at one specific spot, check whether that spot lines up with where your chest actually flexes when you breathe or reach overhead — usually right at the collarbone notch or mid-chest crease. A small notch cut into the sheet at that exact flex point, rather than a straight-edged rectangle, keeps the whole strip flat far longer than reapplying tape ever will.

Related guides

• Best silicone gel for hypertrophic scars
• Mineral sunscreen for healing scars and incisions