YSL Black Opium Eau de Parfum

Trade-secret blanket term that legally conceals dozens to hundreds of individual aromachemicals. Designer fragrance blends almost always contain synthetic polycyclic musks (Galaxolide, Tonalide) — endocrine disruptors that bioaccumulate in human fat tissue, breast milk, and wastewater — alongside Ambroxan, Iso E Super, and historically DEP phthalate solvents. No disclosure obligation in the US.

EU 26 fragrance allergen and well-documented strong dermal sensitizer. The closely related Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde (HICC / Lyral) was banned by the EU in 2021 for the same class of sensitization issues; hydroxycitronellal itself remains restricted but is repeatedly cited in patch-test registries as a top fragrance allergen.

IFRA / EU-declared fragrance allergen and weak photoallergen. Recent SCCS reviews have raised concerns about possible endocrine activity at typical fine-fragrance use levels.

IFRA / EU-declared fragrance allergen with mild preservative function; contact dermatitis is documented in spray fragrances.

Chemical UV filter added to prevent fragrance discoloration in clear bottles. Documented photoallergen; mild estrogenic activity in cell and animal studies. Unnecessary in a product that isn't a sunscreen.

IFRA / EU-declared fragrance allergen. Synthetic jasmine-floral aromachemical; cinnamate-class compounds are a recognized contact-sensitizer family.

IFRA / EU-declared fragrance allergen. Oxidizes on skin and in the bottle into stronger sensitizers; one of the top causes of fragrance contact dermatitis. Required label disclosure means it is present above 0.001% in this leave-on product.

IFRA / EU-declared fragrance allergen. Air-oxidized linalool hydroperoxides are confirmed contact sensitizers — exposure is high in spray-on fragrance.

IFRA / EU-declared fragrance allergen with rose-like odor. Documented skin sensitizer; oxidation products are even more reactive.

IFRA / EU-declared fragrance allergen. Recognized dermal sensitizer; one of the most frequently cited fragrance allergens in patch-test studies.

IFRA / EU-declared fragrance allergen; oxidizes in air to cinnamaldehyde, a strong contact sensitizer.

IFRA / EU-declared fragrance allergen; cinnamate-class contact sensitizer.

IFRA / EU-declared fragrance allergen with strong sensitizing potential — IFRA restricts maximum use levels in leave-on products specifically because of its high contact-allergy rate.

IFRA / EU-declared fragrance allergen. Category 2 skin sensitizer; the EU SCCS has flagged it for cumulative exposure risk across multiple fragranced products.

IFRA / EU-declared fragrance allergen and known dermal sensitizer; SCCS has flagged repeated leave-on exposure as a concern.

Coal-tar azo dye added for bottle color. Frequent contact-sensitizer in topical products; aesthetic-only addition with no consumer benefit.

Coal-tar xanthene dye added for bottle color. Listed irritant and possible contact sensitizer in topical use per published cosmetic-safety panels. Aesthetic-only.

Ethanol-based solvent carrier (~80% of formula). Drying to skin but otherwise inert.

Solvent; safe.

Synthetic floral aromachemical (grape-like). Not on the EU 26 allergen list but mild photo-sensitizing potential is reported. Benign at fine-fragrance levels.