Protetor solar isdin

Why it's rated this way

2 ingredients on this label are flagged. A cosmetic's rating is set by its most serious finding — here, Sodium Hydroxide.

1. Sodium HydroxideMinor concernAlkali (lye). It is used up in the product: as a pH adjuster it neutralises an acid in the formula, and in soap it turns the oils into soap. The EU caps the alkalinity it may leave (pH 11 for pH-adjuster use); the higher limits, with warnings, are only for hair straighteners, cuticle removers and depilatories.

   What it is

   Its recorded role: buffering and denaturant. About Sodium Hydroxide

   Why it's flagged

   Alkali (lye). It is used up in the product: as a pH adjuster it neutralises an acid in the formula, and in soap it turns the oils into soap. The EU caps the alkalinity it may leave (pH 11 for pH-adjuster use); the higher limits, with warnings, are only for hair straighteners, cuticle removers and depilatories.

   Regulatory basis

   EU Cosmetics Regulation, Annex III — allowed only within set limits and conditions; Greenveil's curated cosmetic-ingredient concern list.

   How sure we are

   High confidence. The label names this substance exactly.

2. IsobutaneMinor concernAerosol propellant. The EU prohibits isobutane only when it contains 0.1 % or more of 1,3-butadiene, a carcinogen; cosmetic-grade propellant is purified below that level.

   What it is

   Its recorded role: propellant. About Isobutane

   Why it's flagged

   Aerosol propellant. The EU prohibits isobutane only when it contains 0.1 % or more of 1,3-butadiene, a carcinogen; cosmetic-grade propellant is purified below that level.

   Regulatory basis

   EU Cosmetics Regulation, Annex II — substances prohibited in cosmetics; EU classification as carcinogenic, mutagenic or toxic to reproduction; Greenveil's curated cosmetic-ingredient concern list. The listing applies only under conditions a label can't show (product type, concentration or use).

   How sure we are

   High confidence. The label names this substance exactly; whether the conditions apply depends on the product's formula.

Assessed against the label as captured: all 24 ingredients recognised.