Scar tissue reacts to UV light differently than normal skin, making it highly prone to permanent darkening or staying noticeably lighter than the surrounding tan. Protecting scars in a tanning bed requires a physical barrier, not just sunscreen, because tanning beds emit roughly 12 times more UVA radiation than natural sunlight. Here’s how to shield your scars effectively and what happens if you don’t.
Why Scars React Differently to UV
Normal skin contains a relatively even distribution of pigment-producing cells that darken predictably with UV exposure. Scar tissue doesn’t work this way. Depending on the type and age of the scar, it may have fewer pigment cells (causing it to stay pale while everything around it darkens) or an overactive pigment response that turns it noticeably darker than your surrounding skin. Either outcome makes the scar more visible, which is the opposite of what most people want.
Beyond cosmetic concerns, UV exposure actively damages the collagen that determines how a scar looks and feels. UV light reduces collagen production and accelerates collagen breakdown. Since type I collagen is the primary structural protein in mature scar tissue, this can worsen a scar’s texture and appearance over time. The effect starts within hours of exposure. For newer scars that are still remodeling (a process that can take a year or more), this interference with collagen metabolism is especially damaging.
Tanning beds make all of this worse because of their concentrated UVA output. UVA penetrates deeper into the skin than UVB and generates reactive oxygen species that cause indirect DNA damage in skin cells. The FDA classifies indoor tanning devices as Class II medical devices and requires warnings that they must not be used on skin lesions or open wounds. A healing scar, even one that looks closed on the surface, is still vulnerable tissue.
Best Physical Barriers for Scars
The most reliable protection is a barrier that blocks UV entirely. Sunscreen alone is not enough in a tanning bed, where UV intensity is far higher than outdoor conditions and sweat can break down the product quickly. You need something opaque between your scar and the bulbs.
Medical-grade silicone sheets are a strong option because they serve double duty. They’re already recommended for scar management (helping flatten and soften scars over time), and they create a physical layer over the scar. If you’re using silicone sheets, apply sunscreen to the skin immediately surrounding the sheet so you don’t get a sharp tan line at the edges. Silicone sheets come in various sizes and can be cut to fit your scar precisely.
Opaque medical tape or adhesive bandages work well for smaller scars. Standard fabric bandages block a significant amount of UV, though thicker, non-transparent varieties are more reliable. Avoid clear or thin adhesive strips, which let UV pass through. Look for cloth-based surgical tape or patches designed for wound protection.
UV-blocking stickers and patches designed specifically for sun protection are available from several skincare brands. These are thin, adhesive, and designed to stay put during activity. They’re a good choice if your scar is in a visible spot and you want something low-profile.
What About Sunscreen Alone?
A broad-spectrum sunscreen with SPF 50 or higher offers meaningful protection outdoors, but the math changes in a tanning bed. With UVA levels 12 times higher than sunlight, even a well-applied SPF 50 product won’t fully protect scar tissue the way it would during a walk outside. Sunscreen also wears off with heat and perspiration, both of which are constant in a tanning bed.
If you’re set on using only sunscreen (for instance, if a physical barrier isn’t practical for a large or oddly shaped scar), choose a mineral-based formula containing zinc oxide or titanium dioxide. These sit on top of the skin and physically reflect UV, rather than absorbing it chemically. Apply a thick, visible layer directly on the scar and reapply immediately before your session. Just know that this approach is a compromise, not full protection.
How Long Scars Stay Vulnerable
New scars are the most sensitive. For the first 12 to 18 months after an injury or surgery, scar tissue is actively remodeling, laying down new collagen and reorganizing its structure. UV exposure during this window carries the highest risk of permanent discoloration and textural damage. The younger the scar, the more aggressively you should protect it.
Older, fully mature scars are less reactive but still respond to UV differently than normal skin. A scar that’s been stable for years can still darken unevenly or become more prominent with repeated tanning bed sessions. If your goal is minimizing the scar’s visibility, protecting it from UV is a lifelong consideration, not just a temporary one.
Sunless Tanners as an Alternative
If your main concern is matching your scar’s color to the rest of your skin, a sunless tanner may solve the problem without any UV risk. The active ingredient in most self-tanners reacts with amino acids in the outermost layer of skin to create a temporary brown tint. It involves no UV exposure, no collagen damage, and no risk of permanent discoloration.
Scar tissue often absorbs self-tanner unevenly because its surface texture differs from normal skin. To get a more consistent result, gently exfoliate the scar beforehand (if it’s fully healed) and apply the product in thin layers, building up gradually. A tinted formula helps you see where you’ve applied and avoid streaks. Some people find that mixing self-tanner with moisturizer gives better control over the final shade on scar tissue specifically.
For scars that are significantly lighter or darker than your natural skin tone, color-correcting body makeup designed for scars and birthmarks provides immediate, precise coverage. These products are waterproof, transfer-resistant, and available in a wide shade range. They won’t change the scar itself, but they let you control its appearance without putting vulnerable tissue under UV lamps.