What You Put on Your Skin
The average woman applies somewhere between nine and twelve products before leaving the house. The useful question is not whether any single ingredient is dangerous at the concentration used. It is what happens when you apply several dozen compounds daily, to a large surface area, for forty years.
That is a different question, and it is the one the industry does not have to answer.
The regulatory picture, briefly
Cosmetics in the United States are regulated considerably more lightly than food or drugs. Most ingredients do not require pre-market safety approval. Manufacturers are largely responsible for their own substantiation.
That is not a conspiracy, it is just the framework, and it means "it is on sale so it must have been assessed" does not hold here the way people assume.
The ingredients worth knowing about
- Fragrance, or parfum. The single most useful thing on this list. It is a legally protected term that can cover dozens of undisclosed ingredients, commonly including phthalates. Choosing fragrance free cuts across your whole routine in one decision.
- Parabens. Preservatives, weakly estrogenic. Not alarming individually. The issue is finding them in eight products at once.
- PFAS in cosmetics. Used for wear and spreadability, particularly in long-wear foundation and waterproof mascara. Often not declared.
- Formaldehyde releasers. Preservatives that work by slowly releasing formaldehyde. Listed under names that do not contain the word.
- Chemical UV filters. Some are absorbed systemically at measurable levels. Worth knowing, and not a reason to stop using sunscreen, which brings us to the next box.
Do not stop wearing sunscreen
- The evidence that UV exposure causes skin cancer is overwhelming and among the strongest in medicine
- The evidence that sunscreen filters cause harm at typical use is weak and contested
- If the absorption data concerns you, mineral filters are zinc oxide and titanium dioxide, and they work
Trading a well-established risk for a speculative one is the most common mistake made in this whole subject, and this is where it happens most.
What is actually worth changing
In order, and you will notice that most of it is subtraction rather than purchase.
- Use fewer products. The most effective and least marketed option. Most routines contain several items doing nothing in particular.
- Go fragrance free where you can, starting with anything that stays on the skin: body lotion, deodorant, hand cream.
- Prioritize leave-on over rinse-off. A moisturizer sits on you all day. A shampoo is on for ninety seconds. Spend your attention accordingly.
- Prioritize large surface area. Body lotion matters more than lip balm, by a wide margin.
- Be skeptical of clean beauty pricing. The label is unregulated. Plenty of expensive products marketed as clean contain essentially the same formulations.
Where it matters more
Pregnancy, and anyone trying to conceive. Children, whose surface area relative to body mass is much higher. And anyone applying products to broken or inflamed skin, where absorption rises considerably.
For everyone else, this is sensible reduction, not urgency.
