Hidden Chemicals: Ingredients in Skincare & Cleaning Products That Can Disrupt Your Hormones

When you reach for your favorite lotion or spritz a cleaner on your kitchen counter, the last thing on your mind is how those products might be affecting your hormones. But more and more people are taking a closer look at labels — and for good reason. Some common ingredients in everyday skincare and household products have been linked to hormonal imbalances, fertility issues, and long-term health concerns.

Let’s explore which ingredients are raising red flags and why you may want to avoid them.

Why Hormones Matter

Hormones are the body’s chemical messengers. They regulate mood, energy, metabolism, growth, reproduction, and so much more. Chemicals that mimic or block natural hormones are called endocrine disruptors. Even tiny amounts can throw off your system, especially during sensitive life stages like pregnancy, puberty, or menopause.

Ingredients People Are Avoiding

1. Phthalates

• Where they’re found: Fragrances, nail polish, hairsprays, and some plastics.

• The concern: Known to interfere with reproductive hormones, fertility, and child development. Since fragrance formulas are often proprietary, phthalates can hide under the single word “fragrance” or “parfum” on a label.

2. Parabens

• Where they’re found: Lotions, shampoos, makeup, sunscreen, and deodorants.

• The concern: These preservatives can mimic estrogen in the body, potentially disrupting reproductive health and hormone balance.

3. Triclosan

• Where it’s found: Antibacterial soaps, toothpaste, some deodorants, and cleaning products.

• The concern: Linked to thyroid disruption, reproductive issues, and antibiotic resistance.

4. Oxybenzone & Octinoxate

• Where they’re found: Chemical sunscreens and SPF-containing cosmetics.

• The concern: Both are suspected endocrine disruptors that may mimic estrogen or interfere with thyroid hormones.

5. Formaldehyde & Formaldehyde-Releasing Agents

• Where they’re found: Nail polish, hair straighteners, shampoos, and as preservatives in lotions.

• The concern: Formaldehyde is a known carcinogen and may also affect hormone function.

6. PFAS (Per- and Polyfluoroalkyl Substances)

• Where they’re found: Non-stick cookware, stain-resistant fabrics, waterproof makeup, and some cleaning products.

• The concern: Dubbed “forever chemicals,” PFAS build up in the body and have been linked to thyroid issues, immune suppression, and reproductive problems.

7. Siloxanes (Cyclic Silicones)

• Where they’re found: Creams, lotions, and hair products that promise a silky finish.

• The concern: Some siloxanes may disrupt hormone function and accumulate in the environment.

8. Heavy Metals (Lead, Mercury, Cadmium)

• Where they’re found: Lipsticks, eyeliners, and products with contaminated raw materials.

• The concern: These metals can interfere with thyroid and reproductive hormones and accumulate in tissues over time.

How to Reduce Exposure

• Read labels carefully. Look for “paraben-free,” “phthalate-free,” and “fragrance-free” whenever possible.

• Choose mineral sunscreens. Zinc oxide and titanium dioxide are safer alternatives to chemical filters.

• Ventilate when cleaning. Open windows or use exhaust fans to reduce inhalation of chemicals.

• Go natural when possible. Simple solutions like vinegar, baking soda, or castile soap can replace many harsh cleaners.

• Support brands with transparency. Companies that fully disclose ingredients — instead of hiding behind “fragrance” — are worth supporting.

The Takeaway

Our skin and lungs absorb more than we often realize. By becoming more mindful of the ingredients in skincare and household products, you’re not only protecting your hormones but also supporting a cleaner environment.

It doesn’t have to be overwhelming — start with one swap at a time. Replace your daily lotion or your go-to cleaner with a safer version. Small steps can make a big impact on your long-term health.