In brief
Brands create addiction through ten manipulation techniques: dopamine-driven app design, fast food engineered with sugar, fat and salt, red and yellow logos that stimulate appetite, intermittent rewards in dating apps, notification sounds, in-store scents, music tempo, casino environments without clocks or windows, credit cards that cancel the feeling of loss and shelf placement at eye level. Recognizing them is the first step to regaining control of your habits.
- TikTok shows a new video every few seconds, Instagram sends intermittent notifications and Netflix autoplays episodes so you never decide to stop
- Red raises heart rate and appetite while yellow conveys speed, which is why McDonald's, KFC and Burger King use both in their logos
- Supermarkets play slow music so you walk slower, while fast fashion stores like Zara and H&M use fast music to trigger impulse decisions
Have you ever wondered why certain apps seem to steal your time, why you can’t stop eating a certain food, or why you keep buying the same brand over and over again? It’s not a coincidence.
The world’s most powerful brands use scientific strategies to create addiction in consumers and keep them coming back for more. Here are 10 sneaky techniques that are being used to manipulate our habits.
1. “Digital Dopamine”: The Trick Used by TikTok, Instagram, and Netflix
Digital platforms are designed to release dopamine (the pleasure neurotransmitter) into our brains. How?
- TikTok: Shows you a new video every few seconds, keeping your brain waiting for a “reward.”
- Instagram: Intermittent notifications keep you coming back to see if you have new likes or comments.
- Netflix: Autoplay of episodes leaves you no time to decide whether to stop.
Result? We stay glued to the screens for hours without even realizing it.
2. The “Designed to Be Addictive Food” in Fast Food
Fast food doesn’t just sell food, they sell addiction. McDonald’s, KFC and other chains add sugar, fat and salt in ratios designed to stimulate the release of dopamine.
Ultra-processed foods are designed to make you want one more bite. Even the texture is calculated: the chips must be crispy on the outside and soft on the inside to maximize pleasure.
3. The Color Red that Stimulates Hunger
Do you know why McDonald’s, KFC and Burger King use red and yellow in their logos? Why these colors:
- Red: Increases your heart rate and stimulates your appetite.
- Yellow: Transmits energy and speed, encouraging you to eat quickly and leave your seat for other customers.
If a restaurant chain uses these colors, they want you to eat a lot and quickly.
4. Dating Apps and the Intermittency Trap
Tinder and Bumble use a psychological trick called “intermittent reinforcement”:
- Sometimes they match you right away.
- Other times you have to wait a long time.
- Then, when you’re about to delete the app… BOOM, a new match to keep you coming back.
It’s the same principle as slot machines, which keep the brain constantly waiting for a possible win.
5. The WhatsApp Sound That Forces You to Check Your Phone
The “ding” of WhatsApp notifications is not chosen by chance:
- It has a high-pitched sound that activates the brain’s attention response.
- It conditions you to check your phone even if you haven’t received a text.
After months of use, just the thought of receiving a text makes you compulsively check your phone.
6. The Scent In Stores That Makes You Buy More
Some stores (Zara, Abercrombie & Fitch, Nike) diffuse specific odors to create a positive emotional experience and make you spend more.
- Nike: Uses a rubber scent that reminds you of new shoes.
- Bakeries: They spray the smell of freshly baked bread even if they aren’t baking anything.
- Abercrombie & Fitch: They use a masculine scent in their stores to make customers feel more confident.
7. The Sound in Supermarkets That Makes You Buy More
In supermarkets the music is always slow and relaxing. Why? Because it makes you walk slower, making you more likely to buy more products.
On the contrary, in fast fashion stores (Zara, H&M) the music is fast to make you feel excited and make impulse decisions.
8. Casino Lights That Make You Lose Sense of Time
Casinos are designed to keep you inside as much as possible:
- No clocks or windows to make you lose track of time.
- Warm, soft lighting to relax you.
- Immersive music that creates a constant party atmosphere.
If you’ve ever been to a casino and didn’t understand how 5 hours have passed, now you know why.
9. Credit Cards That Make You Spend More
Paying in cash triggers a feeling of “loss” in the brain, so we are more cautious.
Credit cards nullify this feeling, making it easier to spend money without thinking too much about it. This is why banks want to eliminate cash!
10. Snacks Placement in Supermarkets
The most profitable products are at eye level, while the cheapest ones are lower down.
In the sweets and cereal aisles, children’s products are positioned lower down, so that children see them and put pressure on their parents to buy them.
Conclusion: Are You Really Making the Decision?
Every day, we are surrounded by manipulation strategies designed to make us addicted to products, services, and apps.
The next time you find yourself scrolling TikTok for hours or buying something on impulse, ask yourself: “Is this my choice or am I being controlled?”
Knowing these tricks can help you Take control of your habits and don’t let yourself be manipulated.
Frequently asked questions
How do apps like TikTok and Instagram create addiction?
Apps like TikTok, Instagram and Netflix are designed to release dopamine. TikTok shows a new video every few seconds so the brain keeps waiting for a reward, Instagram uses intermittent notifications that pull you back to check for new likes or comments, and Netflix autoplays the next episode so you have no time to decide whether to stop. The result is hours glued to the screen without realizing it.
Why do fast food logos use red and yellow?
Fast food chains like McDonald's, KFC and Burger King use red and yellow because red increases heart rate and stimulates appetite, while yellow transmits energy and speed, encouraging you to eat quickly and free your seat for other customers. In short, they want you to eat a lot and fast. The food itself is also engineered, with sugar, fat and salt in ratios designed to stimulate dopamine.
What is intermittent reinforcement in dating apps?
Intermittent reinforcement is the trick Tinder and Bumble use to keep you hooked: sometimes you get a match right away, other times you wait a long time, and just when you are about to delete the app a new match appears to bring you back. It is the same principle as slot machines, which keep the brain constantly waiting for a possible win.
Why do stores use scents to make you buy more?
Stores diffuse specific scents to create a positive emotional experience that makes you spend more. Nike uses a rubber scent that reminds you of new shoes, bakeries spray the smell of freshly baked bread even when nothing is in the oven, and Abercrombie & Fitch fills its stores with a masculine scent to make customers feel more confident. Zara uses the same approach.
Why do casinos have no clocks or windows?
Casinos have no clocks or windows because they are designed to keep you inside as long as possible: without them you lose track of time. Warm, soft lighting relaxes you and immersive music creates a party atmosphere, which is why people often cannot understand how 5 hours have passed. A related trick is paying with cards: cash triggers a feeling of loss that makes us cautious, while cards cancel it.
Last substantive revision: April 2, 2025.
