What’s really in your products?

Parabens, sulfates, and phthalates are among the most common synthetic chemicals in conventional personal care products — and all three are worth understanding before buying products a teen will use every day.

These are ingredients that show up on labels all the time — usually attached to the word "free," as in "paraben-free" or "sulfate-free." Understanding what they are, how they got into the products on your shelf, and why they matter for teen skin is the starting point for making better choices at the store.

What Are Parabens — and How Did They End Up Everywhere?

Parabens are a family of synthetic preservatives — methylparaben, ethylparaben, propylparaben, butylparaben — used in conventional personal care products because they're effective and inexpensive at preventing bacterial and fungal growth. They appear in shampoos, moisturizers, body washes, sunscreens, and cosmetics, and have been the industry standard preservative since the 1950s. The concern is what happens after absorption: parabens enter the body through skin and have been detected in human tissue. Research classifies them as endocrine disruptors — compounds that can interfere with the body's hormonal signaling because they weakly mimic estrogen. The European Union has restricted certain parabens in cosmetics as a precautionary measure. For teen boys whose hormonal systems are actively developing during puberty (roughly ages 9–16), daily exposure to ingredients that interfere with hormonal signaling through even small skin absorption is worth reducing. Clean alternatives — phenoxyethanol, vitamin E (tocopherol), or plant-derived antimicrobials — preserve effectively without the endocrine concern.

Sulfates: The Foaming Agent That Strips Too Much

Sulfates — primarily sodium lauryl sulfate (SLS) and sodium laureth sulfate (SLES) — are detergent surfactants derived from petroleum or palm oil that create the dense, rich lather associated with conventional shampoos, body washes, and face cleansers. They became dominant in personal care because they're inexpensive, highly effective at removing oil and dirt, and produce the cleaning sensation consumers expect. The problem is they're too effective: sulfates strip the skin's natural moisture barrier — the acid mantle — along with the dirt. The acid mantle is the protective film on skin's surface, maintained at a slightly acidic pH of 4.5 to 5.5, that keeps moisture in, bacteria out, and skin functioning normally. When it's disrupted by repeated SLS exposure, the skin responds by overproducing oil to compensate — which for teen boys who are already managing excess sebum from puberty hormones means more clogged pores, more breakouts, and more irritation. Plant-derived surfactants like cocamidopropyl betaine (from coconut) and decyl glucoside (from corn and coconut) produce a gentler lather that cleans without this stripping — which is why they're the basis of genuinely clean body wash and face wash formulas.

What Are Phthalates — and Where Do They Hide?

Phthalates are industrial chemicals used in personal care products primarily as fragrance stabilizers — they prevent the volatile compounds in synthetic scent from evaporating too quickly, extending the life of a product's smell. They also appear as softeners and film-formers in some formulas. Phthalates are classified as endocrine-disrupting compounds by the European Chemicals Agency and other regulatory bodies: they interfere with testosterone and estrogen signaling, both of which are critical during puberty. The complication is that phthalates almost never appear on a label by name. They're hidden under the single term "fragrance" (or "parfum") — a legal catch-all that allows manufacturers to omit the names of individual fragrance compounds, which can number in the dozens. For parents scanning a label for phthalates, the practical rule is simple: if a product lists "fragrance" as an ingredient rather than specific essential oils (lavandula angustifolia, melaleuca alternifolia, citrus sinensis), it may contain phthalates. Choosing products with scent derived from named essential oils eliminates this concern entirely.

Why These Ingredients Matter Specifically During Teen Years

Adults using products with parabens, phthalates, and sulfates face the same chemical exposures, but teen bodies present a distinct concern. First, adolescent skin is more permeable than adult skin — higher cell turnover rates and a still-maturing skin barrier mean that topical ingredients may be absorbed at higher rates. Second, puberty is a hormonally sensitive window: the endocrine system is actively orchestrating significant developmental changes, and interference from external endocrine-disrupting compounds (EDCs) during this period is considered higher-risk than similar exposure after development is complete. Third, the cumulative exposure matters — a teen using a conventional body wash, shampoo, deodorant, and face wash every day for years builds a significant total contact with whatever is in those formulas. Choosing products free from the most concerning synthetic categories is a straightforward way to reduce that load during the period when it matters most.

How to Check a Product Label — A Two-Minute Scan

A few quick checks identify whether a product is worth considering for a teen. Scan for "-paraben" at the end of any ingredient name (methylparaben, propylparaben, etc.) — if present, skip it. Check for "fragrance" or "parfum" as a standalone ingredient — this indicates synthetic fragrance and potential phthalates; named essential oils are the clean alternative. Look for "SLS," "sodium lauryl sulfate," or "sodium laureth sulfate" — these are the primary stripping surfactants. Third-party verification systems like SkinSAFE — used by dermatologists and allergists — independently score products based on the absence of common sensitizers and irritants, giving you a fast shortcut that cuts through front-of-label marketing claims. Prep U's deodorant formulas carry a 91% SkinSAFE rating for scented versions and 100% for unscented, independently confirming the absence of these ingredients.

What Do Clean Products Use Instead?

Every ingredient category with a concern has a cleaner alternative that works just as well. Preservation: vitamin E (tocopherol), phenoxyethanol, or plant-derived antimicrobials replace parabens without sacrificing shelf stability. Surfactants: cocamidopropyl betaine and decyl glucoside clean skin gently and effectively without stripping the acid mantle. Scent: named essential oils — tea tree oil (Melaleuca alternifolia), lavender (Lavandula angustifolia), citrus peel oils — replace synthetic fragrance without phthalates. Odor control: the Active Mineral & Botanical Blend (magnesium, zinc oxide, arrowroot, corn starch) in Prep U's Solstice Deodorant neutralizes odor-causing bacteria without aluminum compounds. Body cleansing: plant-based castile and coconut-derived cleansers in Prep U's Plant-Based Castile Body Wash replace SLS with effective, gentle alternatives. These substitutions don't compromise performance — they improve it for teen skin specifically.

The three ingredient categories that come up most often — parabens, sulfates, phthalates — aren't difficult to avoid once you know what to look for. A short, readable label, a "fragrance" entry that names specific essential oils, and an independent SkinSAFE score are the three fastest indicators that a product is actually what it claims to be.

Last reviewed June 2026 by the Prep U team.

*Information on this site is intended for educational and informational purposes only. Any information on this site is not intended to make claims to any unique individual and/or experience.

For more, see our guide to the natural deodorant for boys.