Understanding Endocrine Disruptors (and Why You Should Be Wary of Them)

We’re all careful about what we eat, what we breathe, even the fabrics we wear. But have you ever considered that what you put on your hair can directly affect your hormones?

That’s right—some haircare products can potentially disrupt your endocrine system. This isn’t a rumor or a fad: these disruptions are caused by substances known as endocrine disruptors.

What is an endocrine disruptor?

An endocrine disruptor is a natural or synthetic chemical that interferes with the normal function of the endocrine (hormonal) system—which controls vital functions such as reproduction, growth, mood, sleep, and metabolism.

Endocrine disruptors work in three main ways:

1. Mimicking a hormone (for example, estrogen), sending false signals to the body.

2. Blocking a natural hormone, preventing it from doing its job.

3. Altering the production, release, or elimination of a hormone.

Result: the body receives mixed messages, leading to hormonal imbalances, developmental or reproductive issues, and even certain hormone‑dependent cancers.

Where do they hide in our haircare products?

Unfortunately, these substances can be found everywhere—even in your favorite shampoos, masks, and serums. Here are the main ingredients to watch out for:

• Phthalates: Often hidden under “fragrance” or “parfum.” They mimic estrogen and can impair fertility.

• Parabens (methylparaben, propylparaben, etc.): Preservatives that behave like weak estrogens.

• BHA/BHT: Antioxidants suspected of being carcinogenic and hormonally disruptive.

• Triclosan: An antiseptic linked to thyroid problems.

• Synthetic fragrances: Often contain undisclosed blends of chemicals, including phthalates.

Why should you care?

The scalp is highly permeable. With every application, ingredients penetrate the skin—and enter your body. Frequent use of products containing endocrine disruptors increases long‑term exposure and associated risks.

This is especially concerning for women, pregnant women, teenagers, and children—whose hormonal balance is more vulnerable.

Possible consequences include:

• Infertility, irregular periods

• Early or delayed puberty

• Thyroid disorders

• Obesity or diabetes

• Behavioral issues

• Hormone‑dependent cancers (breast, prostate, testicular)

And Lasève?

At Lasève, we’ve made a bold choice: zero tolerance for questionable substances. None of our formulas contain endocrine disruptors. Our fragrance is synthetic but “Clean Fragrance” certified—guaranteed phthalate‑free, allergen‑free, and non‑toxic to both humans and the planet.

Our philosophy is simple: you shouldn’t have to sacrifice health for beautiful hair. With Lasève, you can have both.

What you apply to your hair doesn’t stop at your ends—it penetrates, circulates, and can influence your health in ways you can’t see, but that are very real.

Fortunately, clean, effective alternatives exist—like Lasève’s complete haircare range.

Take care of your hair. But above all, take care of yourself.