(So It Doesn’t Turn Into Shrek)

Self-tan is supposed to make you look like you’ve just come back from a luxury holiday… not like you’ve been living in a swamp with Shrek.

Yet somehow, many of us have opened our tanning bottle, taken one look inside, and thought: “Why is my tan green?”

Before you panic and assume the product has betrayed you, the truth is usually much simpler. Most of the time, a tan turning green comes down to how it’s been stored. Treat your tan well and it will return the favour with a beautiful glow instead of a questionable colour.

Here’s how to keep your tan happy, healthy, and firmly in the bronze category.

Step Away From the Sauna (AKA Your Bathroom)

Bathrooms might seem like the obvious place to store your tan. You shower there, you apply your tan there… it makes sense, right?

Unfortunately, bathrooms are basically mini saunas. Heat and humidity are not your tan’s best friends.

When tanning products sit in warm, steamy environments, the ingredients can start to break down. This can affect the colour guide in the formula and sometimes cause the product to turn green.

Instead, keep your tan somewhere cooler, like a bedroom drawer or vanity unit. Your tan prefers a calm spa environment, not a tropical rainforest.

Sunlight Is Not a Tan’s Best Friend

Ironically, while self-tan makes you look sun-kissed, the actual product does not enjoy sun exposure.

Leaving your tan on a sunny windowsill, next to a radiator, or in a hot car can quickly mess with the formula. Heat and UV light speed up oxidation, which can change the colour and performance of the product.

Think of your tan like chocolate. Leave it in the sun and things get weird.

Close the Bottle Like Your Glow Depends on It

Because it kind of does.

Every time you leave the cap loose or the pump half-open, air sneaks into the bottle. Air causes oxidation, which can slowly change the colour of the product.

So once you’re done achieving your golden goddess moment, twist that lid closed properly. Your future bronzed self will thank you.

Don’t Keep Tan Forever (It’s Not a Vintage Wine)

We all have that one beauty product we refuse to throw away. But self-tan is not meant to age gracefully.

Most tanning products work best within 6–12 months after opening. If the smell changes, the colour looks suspicious, or the formula seems different, it might be time to let it go.

Yes, even if you spent £25 on it. Tragic, but necessary.

Give It a Little Shake

Sometimes the ingredients in tanning products can separate slightly when they sit for a while.

Before applying, give the bottle a gentle shake. Think of it as waking the tan up before it gets to work.

A quick shake helps mix everything back together and ensures your glow develops evenly instead of looking patchy.

The Bottom Line

If your tan has turned green, don’t panic. It’s usually not the product plotting against you — it’s just been stored in the wrong conditions.

Keep your tan cool, dry, and away from sunlight, close the bottle properly, and use it within its shelf life.

Do that, and your tan will stay golden… not ogre.