Short answer: to avoid tanning while swimming, cover up with UPF swimwear, apply water-resistant sunscreen before you get in, reapply it after every swim and towel-dry, and swim outside the midday hours when the sun is strongest. Water does not block the sun, and it can wash off your sunscreen.
If you swim outdoors often, you probably noticed a swimming tan, with darker shoulders, back, face and the line left by your suit. This guide shares nine practical ways to keep your skin tone more even.
Why you tan faster when you swim
Several things combine to deepen a tan in the water:
- Water reflects sunlight, so your skin gets light from above and below.
- Sunscreen washes off and gets rubbed away by towels.
- You do not feel the sun as strongly while you are cool in the water, so you stay out longer.
- Swimsuits leave lines when only part of the body is exposed.
Does chlorine cause tanning?
No. Chlorine is not what darkens your skin. It can dry your skin and hair and make them look dull, but a swimming tan comes from sunlight. Rinse off after swimming and moisturise to keep your skin looking smooth.
9 ways to prevent a swimming tan
1. Use water-resistant sunscreen
Choose a broad-spectrum sunscreen labelled water resistant, with an SPF of at least 30. No sunscreen is waterproof, so check the label for how long it lasts in the water and follow the directions.
2. Reapply often
Apply sunscreen 15 to 20 minutes before you go in the water, and reapply after towel-drying and as often as the label says.
3. Wear UPF swimwear
Clothing marked UPF 50+ is designed to block most sunlight. Rash guards, swim leggings and full-length swimsuits are comfortable and practical.
4. Cover your head and eyes
A swim cap, hat and sunglasses protect your face and keep it from tanning. A wide-brim hat is ideal for time out of the pool.
5. Watch the time of day
The sun is strongest in the middle of the day. Swim in the early morning or late afternoon where possible.
6. Choose shade and indoor pools
A shaded or indoor pool means less sun exposure. Bring an umbrella or tent to the beach.
7. Use a zinc stick on your face
A sunscreen stick is handy for the nose, cheeks and lips because it stays put when you swim.
8. Rinse and moisturise after swimming
Rinse off chlorine or salt, pat your skin dry and apply moisturiser to keep skin comfortable and smooth.
9. Cover up between swims
Put on a long-sleeved cover-up, a sarong or a shirt when you are out of the water.
Best sunscreen type for swimming
| Feature | What to look for |
|---|---|
| Spectrum | Broad spectrum |
| SPF | 30 or higher |
| Water resistance | "Water resistant" with a stated time on the label |
| Texture | Lotion for body, stick for face |
| Application | Apply before swimming, reapply after towelling |
SPF vs UPF: what is the difference?
SPF is the rating for sunscreen applied to your skin. UPF is the rating for fabric. A UPF 50+ swimsuit gives strong coverage without having to reapply. Combine the two for the best result.
How to remove a swimming tan
A swimming tan fades gradually. To speed things up:
- Exfoliate gently two or three times a week.
- Moisturise daily.
- Wait. Tans fade over a few weeks.
For timing, read how long it takes for a tan to fade. If you want an even, golden colour without the sun, see the best waterproof self tanner.
Swimming after waxing or tanning
If you are waxing before a trip, our guide to swimming after waxing explains how long to wait.
Frequently Asked Questions
How do you avoid tanning while swimming?
Wear UPF swimwear, apply water-resistant sunscreen and reapply after every swim, and avoid the midday sun.
Does chlorine make you tan?
No. Chlorine can dry the skin, but a tan comes from sunlight.
Is waterproof sunscreen really waterproof?
No. It is water resistant for a limited time shown on the label. Reapply after swimming or towel-drying.
Can you get a tan while swimming in a pool?
Yes, if the pool is outdoors. Sunlight reflects off the water and reaches your skin.
How can I fade a swimming tan?
Moisturise, exfoliate gently and be patient. Tans fade over a few weeks.
