Você pode fazer testes de cosméticos em casa iniciando com um teste de sensibilidade em uma pequena área da pele. É recomendável usar um produto novo por vez e observar por 24 a 48 horas se surgem vermelhidão, coceira ou ardor, antes de aplicar no rosto inteiro, no corpo todo ou em quantidade maior.
With beauty product prices rising and more and more shopping happening online, making the wrong choice can be costly and even irritate delicate skin. Here you'll see a step-by-step guide on how to test moisturizers, sunscreen, makeup, deodorant, and hair products without taking risks.
Why has testing cosmetics at home become so important for shoppers in Brazil?
Beauty products have become a craze here in Brazil, with more people buying online without testing them first. Therefore, testing at home helps avoid wasting money on things that can irritate the skin.
According to ABIHPEC, the beauty market grew 30.91% in the first four months of 2023 compared to 2022. As a result, sales exploded, but you need to find out for yourself if the product will work in your daily routine.
The typical Brazilian aged 18 to 45 works a lot and uses public transportation, which increases their exposure to sweat and pollution. Therefore, cosmetics that look perfect in photos may fail in practice.
Heat, humidity, and busy routines: how the Brazilian climate affects your tests.
The heat in cities like Recife or Rio makes the skin sweat more, testing whether the product can handle it. Imagine a sunscreen that melts in hot air – only a test at home can really show that.
High humidity also interferes, leaving items oily or causing irritation. Therefore, observe your actual environment before making incorrect judgments.
Why what works for the influencer may not work for you.
Everyone has different skin, so what works for a celebrity might cause itching for you. Factors like diet and sun exposure vary considerably here in Brazil.
Factors such as work stress or intense sunlight can alter the result. Always test first to avoid disappointment.
How can you tell if a cosmetic seems safe before even testing it on your skin?
Before applying anything to your skin, take a look at the product label. But what should you look for in this assessment?
Brazil returned to its position as the 3rd largest market in the world for personal hygiene, perfumery and cosmetics in 2023, according to data from ABIHPEC. This makes it essential to choose items with official registration.
Always look for products with a visible Anvisa registration number, ensuring they have undergone basic checks. And stop by a discount pharmacy to compare prices before buying.
Those who receive free samples also need to check this. Even free products require a look at the label to avoid unnecessary risks.
| Label item | What it means | What you should observe |
|---|---|---|
| Anvisa registration number | Product approved by the regulatory agency. | Make sure it exists and is up-to-date, avoiding counterfeits. |
| Expiration date | How long does the item remain safe to use? | Choose products that are far from their expiration date so they don't lose their effectiveness. |
| "Dermatologically tested" seal | Tested on people to check for irritation. | Trust verifiable seals, but test the security yourself. |
| List of ingredients | Components present in the product | Beware of strong substances if you are allergic. |
What do labels like "dermatologically tested" and "hypoallergenic" mean?
These labels show that the product has been evaluated, but "dermatologically tested" does not guarantee zero risk for everyone. Always do a home test to confirm.
"Hypoallergenic" suggests less chance of allergies, ideal for sensitive skin. However, each body reacts differently, hence the need to observe for yourself.
Ingredients that deserve special attention for sensitive skin.
Substances like retinoids or strong acids can be irritating, so always read the label carefully. Those with sensitivities may notice reactions immediately.
When in doubt, choose brands that list ingredients clearly. This helps avoid unpleasant surprises when using the product.
How to do a cosmetic sensitivity test at home step by step.
The sensitivity test begins with a light touch on a hidden area of the skin. According to Anvisa, this simulates checks performed in a laboratory.
Always use one product at a time, applying it to an area such as the inside of your elbow. Wait 24–48 hours before continuing.
The goal is to detect early signs of a reaction. If everything seems calm, then apply more.
Every test should be done slowly, noting any changes in the skin to avoid bigger problems.
Where to apply, how much to use, and how long to wait.
Apply to the inner forearm or behind the ear, using only one drop. Wait a full day to see the results.
If it doesn't seem strange at all, go ahead. Otherwise, wash with mild soap and water.
Warning signs: when to stop testing and seek medical help
If you notice intense redness or swelling, stop immediately. These are warning signs of a possible allergy.
See a dermatologist if symptoms persist, even if they are mild. Prevention is better than cure.
How to test facial cosmetics without ruining your skin or makeup.
Facial products require extra care to avoid disrupting your routine. Test them little by little.
Skincare products are expensive, so it's important to test them beforehand. According to Kantar, Brazilian women spend R$$ 237 annually on these items, justifying the investment.
Introduce new products slowly, observing whether your hair becomes oily or dry. This helps maintain the overall beauty.
How to incorporate moisturizer, serum, and sunscreen without overloading the skin.
Start with a small amount at night, mixing it with your usual routine. Observe over several days to see if your skin absorbs it well.
If it seems good, increase the amount gradually. Avoid strong mixtures that can cause comedones.
Testing foundation, concealer, and powder: shade, wear time, and oiliness.
Apply on a typical day, noting if it fades in the sun. The Brazilian climate accelerates this type of testing.
Check the actual duration and whether it stings your eyes. Adjust as needed.
How to test body moisturizers, soaps, and deodorants in everyday use.
Body products are best tested on thick skin first. Use them in your actual routine to see how they work.
The Brazilian market is growing, driven by the rise in hygiene products. Kantar reports a 231% increase in the last semester.
Test it on hot days, simulating the heat of the workplace. This reveals its true effectiveness.
Small areas first: how to reduce the risk of irritation.
Apply to the inner arm and wait for a reaction. Observe for several days to see if it dries or appears irritated.
If everything is okay, use it on your entire body. Always do it slowly for safety.
Common mistakes when switching deodorants or soaps
Do not test immediately after hair removal, as it will cause further irritation. Avoid mixing new products without checking them first.
If it burns, stop and consult a dermatologist. Ordinary people seek medical advice.
How to test hair products without damaging your hair and scalp.
Brazilian hair varies greatly, so test slowly. Observe with each wash.
Projections show growth in the sector, with US$$ 55.64 billion in 2033. Testing is worthwhile for the economy.
Use a small amount first, noticing any dandruff or heaviness. This protects the hair.
Shampoo, conditioner, and hair mask: how long to test each one?
Test the shampoo for three washes, checking if it rinses out or irritates the scalp. After that, the condom adheres.
Wait a few more days for the mask to have its full effect. Always check for improvement at the roots.
Exercise extra caution with strong chemicals and homemade hair straightening treatments.
Homemade products require a strand test beforehand. Stop using them if an allergic reaction occurs.
Seek professional help if you notice anything unusual. Safety comes first in treatment.
How to use free samples and mini cosmetic products without taking risks.
Samples allow for experimentation without spending money. Start small to evaluate.
The premium market grows by 13.7%, making testing essential. Avoid costly mistakes.
Use on skin that has been tested beforehand, confirming a reaction. Then, buy with confidence.
How many days should I use the sample to form a real opinion?
Use it daily for one week, noting any change. This gives a clear idea of the effect.
If you like it, continue; if not, throw it away without guilt. That's exactly what samples are for.
Careful consideration of sample validity and storage.
Store in a cool place, away from sunlight. Check the expiration date before use.
If it's expired, throw it away immediately. It's best to prevent contamination.
What the industry already tests in the lab and what only you can test on your skin.
Companies perform basic safety checks, but personal skin varies. So, supplement with a home test.
Anvisa recommends tests such as irritation tests before sale, guaranteeing a minimum level of safety. But it doesn't cover everything.
Lab tests guarantee overall quality, but not individual allergies. Your test shows the real picture.
| Test type | Who does | What guarantees | Which doesn't guarantee |
|---|---|---|---|
| Skin irritation | Regulated laboratory | The product does not usually irritate. | Reaction in unique sensitive skin types |
| Chemical stability | Manufacturer and Anvisa | The product lasts without changing. | Effectiveness in the Brazilian climate |
| Microbiology | Certified laboratory | Free from bad bacteria | Personal compatibility |
| Sensitivity in your skin | You yourself at home | How does it react to your body? | Nothing general, only individual. |
Stability, microbiology, and irritation testing: explained in simple language.
Stability testing verifies if the product remains good. Microbiology checks for contamination.
Irritation on the forehead; it burns on medium skin. All done before sale.
Why is it that you can still be allergic to an approved product?
Skin varies depending on genes and exposure. Even if approved, test to see the risks.
Dermatologists' guidelines warn against this. Always observe before using excessive amounts.
Who needs extra care when testing cosmetics at home?
People with sensitive skin should consult a doctor first. Test with caution.
Brazilian guidelines highlight a higher risk for allergy sufferers. Extra precautions are worthwhile.
Groups such as pregnant women notice hormonal changes. Always test in a small portion.
Sensitive skin, with rosacea, dermatitis or active acne.
These skin types react easily, so test minimally. Stop if irritation begins.
Use hypoallergenic products initially. Follow up with a dermatologist.
Pregnant women, children, and people with a history of severe allergies
Pregnant women should avoid potent active ingredients first. Children should test on a small, adult-sized area.
Those with pre-existing allergies should seek medical advice. Safety comes first.
Common mistakes when testing cosmetics at home (and what to do differently)
Many people start by mixing new products together. It's better to do one at a time.
The market grew by 12.7% in value, bringing new features. Test separately.
Avoid misjudging based on Brazilian heat. Observe calmly.
Mixing too many new and strong active ingredients at once
Doing this increases the possibility of irritation. Always test in isolation.
When adding, wait for a reaction. Take it slow and you'll gain confidence.
To think that something is burning or on fire means it's working.
Burning sensation signals a problem, not success. Stop and check the extension.
Seek medical attention if symptoms persist. True function comes without pain.
In short, testing cosmetics at home includes checking the label and registration, performing a sensitivity test on a small area, introducing one product at a time, observing the skin's reaction over a few days, and seeking dermatological advice in case of strong signs of allergy or if you have very sensitive skin.
Now, tell us in the comments: which products do you find most difficult to test at home? Share your good or bad experiences, and send specific questions for me to answer in future content!
