Saniderm and Second Skin: How Long to Keep It On and How to Take It Off

If you've just walked out of the studio with a clear, shiny film over your new tattoo, you're wearing a "second skin" bandage. Saniderm is the best-known brand, and many shops in Los Angeles, including ours, use clear film dressings like it. They're simple once you know what to expect, but the first few days raise a lot of questions: Is that fluid normal? How long does it stay on? How do I get it off without pulling my skin?

This guide answers all of them. For the broader question of how long a fresh tattoo should stay covered, with film or with a regular bandage, see our post on how long to keep your tattoo wrapped.

What Saniderm actually is

Saniderm is a thin, breathable, waterproof adhesive film, the same family of dressings used in hospitals for wounds and IV sites. Placed over a fresh tattoo, it:

• Keeps dirt and bacteria out while the skin is most vulnerable.
• Holds in your body's own fluid (plasma), which keeps the tattoo moist rather than letting it dry into a hard scab.
• Protects the tattoo from clothes, sheets and bumps in the first days.
• Lets you shower normally, since the film is waterproof while it's sealed.

Many people find tattoos heal with less scabbing under film. It isn't required, though. Some artists prefer a traditional wrap, and your artist will choose what suits your tattoo and skin.

How long to keep Saniderm on

Follow your artist's instructions first. They know your tattoo, your skin and how much it was worked. Our general guidance at Mantle is to keep the film on for about two days, as long as it's still sealed.

The manufacturer's own guidance gives useful limits. Saniderm's support guide on wear time says:

• The first piece can stay on 8 to 24 hours when a lot of fluid builds up, and should be changed by the 24-hour mark in that case.
• Some artists then apply a second piece for several more days.
• Saniderm should not be worn for more than 7 days in total.

If your artist sends you home with a second piece to put on yourself, wash the tattoo gently and let it dry completely before applying it.

The fluid underneath: what's normal

The first time you see it, the pocket of liquid under the film can look alarming. It's usually completely normal:

• Clear or yellowish fluid is plasma, part of normal healing.
• Ink-tinted fluid is excess ink and plasma that your skin is pushing out. It doesn't mean your tattoo is fading.
• A little blood in the first hours is common, especially on larger pieces.

Fluid is mainly a problem when it leaks out of the edges. Once the seal is broken, the film is no longer protecting the tattoo, so it's time to take it off, wash gently and move on to regular aftercare.

When to take it off early

Remove the film sooner than planned if:

• The seal breaks and fluid leaks out, or water gets underneath.
• It's lifting at the edges so much that dirt can get in. In LA heat, sweat can loosen edges faster than you'd expect.
• The skin around it is very itchy, red or bumpy beyond the tattoo itself, which can be a reaction to the adhesive.
• It just feels wrong, painful or hot. Take it off, wash gently and text us a photo.

How to remove Saniderm without the sting

Peeling a strong adhesive off tender skin is the part people dread. Done slowly, it's easy:

1. Get in a warm shower first. Let warm (not hot) water run over the film for a few minutes to soften the adhesive.
2. Find a corner and lift it gently.
3. Pull the film back over itself, low and parallel to your skin, rather than straight up. Go in the direction of hair growth.
4. Go slowly and let the water keep working on the adhesive as you go.
5. Stuck? A little coconut, olive or baby oil around the edges helps loosen it, as Saniderm's removal guide suggests. Wash the oil off afterward.

Once it's off, wash the tattoo gently with clean hands, warm water and antibacterial soap, pat it dry, and let it breathe for a little while before applying a thin layer of unscented lotion.

After the film: the next two weeks

When the film comes off, your tattoo moves into normal healing: light flaking, some itching and a slightly cloudy look for a while. Keep it clean, lightly moisturized and out of the sun, and avoid pools, hot tubs and the ocean until it's fully healed, usually two to four weeks. Our aftercare guide walks through every step, and our guide to getting tattooed in Downtown LA covers what to bring and expect on the day.

Saniderm vs Tegaderm: what's the difference?

You may hear both names, and sometimes "second skin" for either. They do the same job, and the care is the same, but they aren't identical:

• Tegaderm is a medical dressing made by 3M. Hospitals have used it for decades over wounds, burns and IV sites. It's sold in pre-cut rectangles at pharmacies and online, which makes it easy to find on a trip or a Sunday night in LA.
• Saniderm is a film made specifically for tattoos. It comes in rolls and larger sheets, so it can cover a big piece in one go, and its adhesive is formulated for longer wear on tattooed skin.
• Thickness and feel: both are thin and breathable. Some people find Tegaderm slightly stiffer and Saniderm a little more flexible over joints, but on a forearm or shoulder you're unlikely to notice.
• Wear time: the same rules apply to both. Keep the first piece on for roughly the time your artist gave you, replace it if it leaks or lifts, and never wear film for more than a week in total.
• Removal: the same warm-shower, peel-back-over-itself method works for both. Tegaderm's adhesive can feel grabbier on hair, so go slowly.

If your artist used one and you need to replace it with the other, that's fine. Wash and fully dry the tattoo first, and apply the new piece with about an inch of overlap onto clean skin around the tattoo so it seals.

When neither is a good idea: if you've reacted to adhesive bandages before, or the tattoo is on a spot that bends and sweats constantly (the inner elbow, the back of the knee), tell your artist. A traditional wrap plus regular washing may heal more comfortably for you.

Saniderm FAQ

Questions about your new tattoo? Text us at 323.395.0049 with a photo. Our Downtown LA studio at 7th and Olive is open daily from 8 am to 10 pm.