Ingredients to Avoid in Cosmetics: The Practical Guide to Really Caring for Your Skin

If you've ever looked at the ingredient list on your usual moisturizer or shampoo and felt like you needed a translator, you're not alone. The conventional cosmetics industry uses hundreds of synthetic compounds, and many of them end up on your skin every single day without you realizing it. The good news is that more information is available than ever, and you have the power to choose cleaner, more skin-friendly products.

The most problematic ingredients worth knowing about

This isn't about scaremongering, but about being informed. Some ingredients are used because they're cheap or because they deliver instant results (like rich foam or a silky texture), yet they can have long-term effects we'd rather avoid. These are the most common ones:

• Parabens (methylparaben, propylparaben, butylparaben): used as preservatives. Some studies suggest they may interfere with the hormonal system, although their safety at permitted concentrations is still under debate.
• Silicones (dimethicone, cyclomethicone): they give an immediate sense of smoothness, but they create a film on the skin that can clog pores and stop it from breathing properly.
• Sulfates (SLS, SLES): the culprits behind that generous foam in body washes and shampoos. Yes, they cleanse deeply, but they also strip away the skin and scalp's natural oils, causing irritation and dryness.
• Synthetic fragrances: that pleasant scent can hide a mixture of potentially irritating chemicals. In natural cosmetics, they're replaced by essential oils.
• PEG and PPG: petroleum derivatives used as emulsifiers. They can contain impurities such as ethylene oxides, which are classified as potentially carcinogenic.
• Phenoxyethanol: another widely used preservative, even in products labeled as "natural." Some people tolerate it poorly, especially around the eye area.

How to spot cleaner cosmetics: 5 steps that work

Now for the practical part. Knowing what to avoid is useful, but what really helps is knowing what to look for instead. Here's a simple way to assess your products:

• Read the first 5 ingredients: they usually make up 80% of the product. If the top spots are unpronounceable petroleum-derived names, you might want to look for alternatives.
• Look for trusted certifications: seals such as Cosmos, Ecocert or BDIH guarantee minimum standards for natural cosmetics.
• Choose formulas with naturally derived ingredients: at AizuaBeauty we select brands that prioritize transparent formulas, with plant-based actives and no unnecessary filler.
• Watch how your skin reacts after using it: if you notice tightness, breakouts or constant irritation, something in your routine may not be agreeing with you. Sometimes the problem comes down to one specific ingredient.
• Go for simplicity: minimalist formulas tend to be gentler and more effective. Brands like Ringana, for example, work with preservation systems based on natural alcohols and plant extracts that protect the product without being aggressive.

You don't need to become a chemist to improve your routine. With small changes you'll start to notice the difference: more comfort, less irritation, skin that behaves better because it breathes and works normally.

Frequently asked questions

Is it dangerous to use cosmetics with parabens?

Not necessarily at permitted concentrations, but many brands are phasing them out because gentler alternatives exist and there are concerns about their possible effect on the hormonal system.

How do I know if a product is truly natural?

Look for certification seals such as Cosmos or Ecocert, read the ingredient list (INCI) and be wary of vague claims like "natural" with nothing to back them up. Transparent brands explain what they put inside and why.

Can I change my whole routine at once?

There's no need to. Start with the products that stay on your skin the longest: facial cream, serum and eye contour. Introduce changes gradually so you can see how your skin responds.