You've escaped the British weather.

You're somewhere warm, you've finally got your swimwear on and within a couple of days you notice them.

Tan lines.

For some women, they're part of a holiday.

For others, they're frustrating—particularly when you come home and want to wear a strapless dress, low-backed top or something that reveals the unmistakable outline of your swimsuit.

Traditionally, there have only been two obvious solutions:

Wear less.

Or accept the lines.

But what if you actually want more coverage?

That's exactly why tan-through swimwear is different.

If you're planning an autumn or winter-sun escape, here's how to work towards a softer, more even-looking tan without feeling you need to wear the smallest bikini possible.

Cover More. Tan More Evenly.

SWIMSARA was created because wanting fewer obvious tan lines shouldn't mean having to expose more of your body than you're comfortable with.

Our specialist tan-through fabric is designed to allow a proportion of sunlight to reach the skin beneath your swimwear.

So you can choose the coverage you actually want—from bikinis and high-waisted bottoms to one-pieces and long sleeves—while working towards a softer contrast between covered and exposed skin.

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Why Do Swimsuit Tan Lines Happen?

Traditional swimwear creates a barrier between your skin and sunlight.

The areas outside your bikini or swimsuit receive direct UV exposure.

The areas underneath conventional swimwear receive much less.

Over time, this difference creates the familiar outline of:

• Bikini straps
• Bikini bottoms
• Swimsuit necklines
• Bandeau tops
• Halternecks
• One-piece swimsuits

The stronger the difference between the colour of your exposed and covered skin, the more obvious those lines appear.

Can You Completely Avoid Tan Lines?

The only way to guarantee that conventional swimwear doesn't leave its outline would be to avoid tanning or avoid covering the relevant areas.

That's obviously not the answer many women want.

And we don't think it's realistic to promise that any swimwear will give everyone absolutely zero tan lines.

Your results depend on factors including your skin, UV exposure, fit and how consistently you wear the garment.

What tan-through swimwear can do is allow some sunlight to reach the covered skin, helping to reduce the contrast between the areas underneath your swimwear and the areas directly exposed to the sun.

That's why we prefer the phrase:

A more even-looking tan.

How Does Tan-Through Swimwear Help?

SWIMSARA uses specialist fabric constructed with microscopic openings.

These openings allow a proportion of sunlight to pass through the material and reach the skin beneath.

Traditional opaque swimwear largely prevents that direct exposure.

Tan-through fabric allows some of it through.

The result can be a softer difference between covered and uncovered areas.

For a more detailed explanation of the technology, read our Ultimate Guide to Tan-Through Swimwear.

1. Wear Your Tan-Through Swimwear Consistently

If your aim is a more even-looking tan, consistency matters.

Imagine wearing a conventional halter bikini on day one.

A strapless bikini on day two.

A conventional swimsuit on day three.

And tan-through swimwear on day four.

Each garment covers different areas.

That can create multiple overlapping tan lines.

Instead, wearing tan-through swimwear consistently throughout your holiday gives the skin underneath the specialist fabric more opportunity to receive some sunlight.

You can still change styles.

The important difference is that the fabric itself remains tan-through.

2. Make Sure Your Swimwear Fits Properly

Fit matters.

Tan-through fabric should sit smoothly and closely against your skin.

That doesn't mean painfully tight.

But large folds, loose areas or sections that repeatedly move can affect how consistently the skin beneath the fabric is exposed.

Before travelling, try your swimwear on properly.

Sit.

Walk.

Raise your arms.

Bend.

Twist.

If it continually moves or gaps, reconsider the size or style.

Read How Should a Swimsuit Fit? Your Complete Swimwear Fit Guide for more help.

3. Choose Coverage Based on Confidence, Not Tan Lines

This is perhaps the biggest difference tan-through swimwear can make.

With conventional swimwear, there's an obvious temptation:

Less fabric = fewer covered areas.

So if you're worried about tan lines, you may end up wearing a smaller bikini than you actually feel comfortable in.

Tan-through fabric gives you another option.

Want high-waisted bottoms?

Wear them.

Prefer a swimsuit?

Wear one.

Want your arms or upper body covered?

Choose a Long Sleeve Top.

You can choose coverage according to how you want to feel, rather than simply trying to expose as much skin as possible.

4. Try a Bandeau If Shoulder Tan Lines Bother You

One of the most obvious holiday tan lines comes from bikini straps.

If you regularly wear strapless dresses or tops, shoulder marks can be particularly noticeable when you get home.

A Bandeau Bikini gives you a clean neckline without permanent shoulder straps.

SWIMSARA's Bandeau can be worn strapless while lounging, with the option to attach the detachable string when you want additional security.

That makes it particularly versatile for holiday.

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5. Don't Be Afraid of a Swimsuit

If you're trying to avoid tan lines, wearing more fabric might initially sound completely wrong.

With conventional swimwear, a one-piece creates a much larger covered area.

With tan-through fabric, that doesn't have to mean your entire torso remains completely untouched by sunlight.

Paula Fitted Swimsuit

The Paula Fitted Swimsuit provides more coverage through the torso while retaining a feminine plunge neckline and open back.

The tan-through fabric allows some sunlight to reach the skin beneath the covered areas.

That makes it a particularly interesting option if you prefer a swimsuit but dislike the strong contrast a conventional one-piece can leave behind.

Shop the Paula Fitted Swimsuit

6. High-Waisted Bottoms Don't Have to Mean a High-Waisted Tan Line

High-waisted bikinis can be incredibly flattering if you prefer more coverage around your stomach.

The downside with conventional fabric is obvious.

More fabric means a larger covered area.

That can leave a noticeable difference between your stomach and the skin above it.

With tan-through fabric, some sunlight can reach the covered area.

This means you can choose high-waisted bottoms because you like the coverage, rather than avoiding them purely because you're worried about the tan line.

Read High-Waisted vs Full-Coverage Bikini Bottoms: Which Is Right for You? if you're deciding which style to choose.

7. Consider a Halter for Support

If you need more bust support, choosing swimwear purely because it has the fewest straps isn't always practical.

You might feel far more comfortable in a halter.

Halter Bikini

The Halter Bikini gives you wider straps and an adjustable neckline for a more secure feel.

Because the fabric itself is tan-through, you don't necessarily have to choose between the support of a halter and working towards a more even-looking tan.

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8. Try the Aurora Halter for Adjustable Support

If you like a halter but want more control over your neckline, the Aurora Halter Bikini gives you another option.

Its adjustable centre toggle allows you to alter the neckline and amount of cleavage.

This can be useful when you want one bikini to work differently throughout your holiday.

More relaxed while lounging.

More secure when swimming.

Shop the Aurora Halter Bikini

9. What About Long-Sleeve Swimwear?

Long sleeves and tanning don't sound like natural partners.

That's precisely what makes tan-through fabric interesting.

You may prefer additional coverage across your arms and upper body.

Perhaps you're spending time around the pool.

Maybe it's breezy.

Or you simply feel more comfortable covered.

The Long Sleeve Top gives you that option while its specialist fabric still allows some sunlight to reach the skin beneath.

Again, that doesn't mean completely invisible tan lines are guaranteed.

But it gives you a very different option from a conventional opaque long-sleeve swim top.

Shop the Long Sleeve Set

Does Tan-Through Swimwear Give You Zero Tan Lines?

We prefer not to make that promise.

Some customers can experience excellent tanning results beneath the fabric, but everyone's skin and holiday conditions are different.

Your results can be influenced by:

• Skin type
• UV strength
• Destination
• Time spent outside
• Swimwear fit
• How consistently you wear tan-through fabric
• The areas of your body receiving direct versus filtered sunlight

So rather than promising "no tan lines", think of tan-through swimwear as a way to help create a more even-looking result and reduce the contrast associated with conventional swimwear.

Can You Tan Through Swimwear on a Winter Holiday?

Potentially, provided there is sufficient UV exposure.

Tan-through fabric doesn't create UV.

It allows some of the available sunlight to reach the skin beneath.

That means your destination matters.

A winter day in the UK isn't equivalent to a winter-sun holiday in Egypt, the Canary Islands or Dubai.

If you're wondering how season and destination affect tanning, read Can You Still Tan in Autumn? How Tanning Changes After Summer.

Don't Judge UV by Temperature

One of the easiest mistakes to make on a winter-sun holiday is assuming that because the air doesn't feel unbearably hot, the sun isn't strong.

Heat and UV radiation aren't the same thing.

You can still receive significant UV exposure when conditions feel comfortable.

Check the UV Index at your destination and use appropriate sun protection.

What About Sunscreen?

Tan-through swimwear isn't a substitute for appropriate sun protection.

You should protect exposed skin according to your skin type, local UV conditions and current sun-safety guidance.

You can also manage exposure with shade, hats, sunglasses and clothing.

The aim of tan-through swimwear isn't to encourage you to stay in the sun for longer.

It's to give you more choice over what you wear while you're enjoying it.

Why Winter Sun Can Make Tan Lines More Noticeable

Think about what happens when you return home.

You might go from spending a week in swimwear to wearing:

• Party dresses
• Strapless tops
• Eveningwear
• Gym wear
• Lower-cut clothing

A strong bikini outline can suddenly become much more noticeable.

This is particularly relevant for winter holidays around Christmas and New Year, when you may return straight into party season.

Working towards a more even-looking tan while you're away can make that transition feel much easier.

Which SWIMSARA Style Is Best for Fewer Obvious Tan Lines?

It depends on the coverage you want.

Bandeau Bikini

Best for: Keeping permanent straps away from your shoulders.

Halter Bikini

Best for: More support while still benefiting from tan-through fabric.

Aurora Halter Bikini

Best for: Adjustable cleavage and support.

High-Waisted Bikini

Best for: More stomach coverage without relying on conventional opaque fabric.

Paula Fitted Swimsuit

Best for: Torso coverage while still allowing some sunlight through the specialist fabric.

Long Sleeve Set

Best for: Maximum upper-body coverage while retaining the benefits of tan-through material.

There isn't one best option.

Choose according to the coverage and support you want.

What Should You Pack for Winter Sun?

For a one-week winter-sun escape, we'd consider:

1 x Halter or Aurora Halter Bikini
For everyday swimming and lounging.

1 x Bandeau Bikini
For strapless days.

1 x Paula Fitted Swimsuit
For more torso coverage and styling as a bodysuit.

1 x Long Sleeve Set
For additional upper-body coverage.

1–2 Alternative Bikini Bottoms
So you can change the amount of coverage without packing multiple complete bikinis.

This gives you plenty of variety without overpacking.

Frequently Asked Questions

How can I avoid bikini tan lines on holiday?

Tan lines occur because covered and uncovered skin receive different levels of UV exposure. Tan-through swimwear allows some sunlight to reach the skin beneath the fabric, which can help reduce the contrast between covered and uncovered areas.

Does tan-through swimwear completely stop tan lines?

Not necessarily. Results vary between individuals and conditions, so we prefer to describe the potential result as a softer, more even-looking tan rather than guarantee completely invisible lines.

How do I avoid shoulder tan lines?

A strapless bandeau removes permanent shoulder straps. Tan-through straps may also allow some sunlight to reach the skin underneath, depending on conditions.

Can I wear a swimsuit without getting a strong swimsuit tan line?

Tan-through one-piece swimwear allows some sunlight to reach the skin underneath the covered areas, which can help reduce the contrast associated with conventional swimsuits.

Can you tan through high-waisted bikini bottoms?

SWIMSARA's tan-through fabric is designed to allow a proportion of sunlight to reach the skin underneath, including areas covered by high-waisted bottoms.

Does tan-through swimwear work in winter?

It can work when there is sufficient UV exposure. Results depend on your destination, UV conditions and individual skin.

Does tan-through swimwear work through the straps?

The same specialist fabric is designed to allow some sunlight through covered areas, although tanning results can vary across the body.

Why do I still have some tan lines with tan-through swimwear?

The skin directly exposed to sunlight and the skin underneath fabric don't necessarily receive identical UV exposure. Fit, UV levels, skin type and wear consistency can also influence results.

Should tan-through swimwear fit tightly?

It should sit smoothly and closely against your skin without being painfully tight.

Can I wear more covered swimwear and still get a tan?

Tan-through swimwear is specifically designed to allow some sunlight to reach skin beneath covered areas, giving you more flexibility over how much coverage you wear.

Related Guides

The Ultimate Guide to Tan-Through Swimwear
Our cornerstone guide explaining how tan-through swimwear works and what results to expect.

Can You Still Tan in Autumn? How Tanning Changes After Summer
Understand how UV levels and location affect tanning beyond summer.

Best October Sun Destinations: Where to Go for a Warm Autumn Escape
Find inspiration for your next autumn-sun holiday.

Best Swimwear for an October Holiday: What to Wear for Autumn Sun
Build a versatile swimwear capsule for your October escape.

How Does Tan-Through Fabric Work? The Science Behind a More Even Tan
Learn more about the technology behind the fabric.

How Should a Swimsuit Fit? Your Complete Swimwear Fit Guide
Find out why the correct fit matters when wearing tan-through swimwear.

Cover More Without Giving Up on a More Even-Looking Tan

You shouldn't have to choose between covering the parts of your body you want covered and coming home with obvious tan lines.

That's the problem SWIMSARA was created to solve.

Wear the swimsuit.

Choose high-waisted bottoms.

Wear the supportive halter.

Cover your arms.

Or choose something tiny because that's what makes you feel fantastic.

Your coverage should be your choice.

And with specialist tan-through fabric allowing some sunlight to reach the skin beneath, you can work towards a softer, more even-looking holiday tan while wearing the swimwear you actually want to wear.

Ready to experience the difference?

Shop SWIMSARA's best-selling tan-through swimwear collection.

Shop Best Sellers