I grew up outside. Lakes, beaches, woods. The idea that what you put on your body matters was something I learned early, even if I could not have explained the chemistry behind it. When I started researching skincare ingredients more seriously before launching Erda, I was genuinely surprised by how little oversight exists in the US cosmetics industry. The FDA has not significantly updated its cosmetic ingredient regulations since 1938. That means companies are largely self-policing what they put in products that go on your skin every day.

That does not mean every ingredient is dangerous. But it does mean the burden falls on you as a consumer to understand what you are buying, more than most people realize. Here are the ingredients worth knowing about.

Parabens

Methylparaben, propylparaben, butylparaben, ethylparaben. These synthetic preservatives extend shelf life and are found in a huge percentage of conventional skincare and personal care products. They are also known endocrine disruptors, meaning they can interfere with hormone signaling. Parabens have been detected in breast tissue and urine samples. The EU has restricted several forms. The US has not. Look for anything ending in paraben on the ingredient list and consider avoiding it.

Synthetic Fragrance

The word fragrance or parfum on a label can represent a blend of dozens or even hundreds of undisclosed chemical compounds, because fragrance formulas are considered trade secrets under US law. Many of those compounds are allergens, irritants, or endocrine disruptors. Fragrance is one of the leading causes of contact dermatitis. If a product lists fragrance without specifying natural essential oils, it is almost certainly synthetic. At Erda, if there is scent in a product you will find it listed by name, like lavender essential oil or frankincense essential oil.

Phthalates

Often hidden inside that fragrance listing, phthalates are chemical plasticizers used to help synthetic fragrance last longer. Like parabens, they are endocrine disruptors with documented effects on reproductive hormones. Avoiding synthetic fragrance is the most direct way to avoid phthalates.

Sodium Lauryl Sulfate

SLS and its cousin SLES are surfactants that create lather in cleansers, shampoos, and body wash. They strip skin's natural oils too aggressively, disrupting the acid mantle and compromising the skin barrier. For people with dry, sensitive, or eczema-prone skin, SLS-containing products are often a silent contributor to their problems. Our tallow soaps clean effectively without any synthetic surfactants.

Mineral Oil and Petrolatum

Derived from petroleum refining, these ingredients are occlusive and extremely cheap, which is why they dominate conventional moisturizers. They do create a barrier that slows moisture loss. But they provide zero nutritional value to skin, and improperly refined versions can contain carcinogenic contaminants. Grass-fed tallow provides comparable occlusive benefits plus a full suite of biocompatible fatty acids and fat-soluble vitamins. There is no comparison in terms of what each actually does for your skin.

The Simple Alternative

The most practical way to avoid problematic ingredients is to use products with shorter, recognizable ingredient lists. If you cannot identify what something is or why it is there, that is useful information. Every Erda product uses ingredients you can research and understand. That transparency is not a marketing strategy. It is just how we think skincare should work.