Fat Water Pore-Refining Toner Serum

The base most products are built on. It carries the other ingredients and has no safety concern.

A plant extract used for mild astringent and soothing effects. Evidence for its benefits comes mostly from traditional use and small studies rather than large trials, and the tannins it contains can be mildly irritating for some people, particularly in older distilled formulas that retain trace alcohol.

A lightweight humectant and solvent similar in role to propylene glycol, used to carry actives and give lotions a lighter feel. CIR has reviewed it and considers it safe as used in cosmetics.

A form of vitamin B3 used to support a more even-looking tone and a comfortable barrier. Well tolerated at cosmetic levels.

A widely used emulsifier and solubilizer that has been in cosmetics and pharmaceuticals for decades. The CIR has assessed it as safe with no known concerns at typical cosmetic concentrations. As with any surfactant, some people with very sensitive skin may experience mild irritation.

A fermented extract of radish root that acts as a natural preservative and skin-conditioning agent. It has shown antimicrobial properties in formulation work and is well tolerated in rinse-off and leave-on products, though individual sensitivities can vary.

Fig fruit extract rich in polyphenols and sugars. Limited scientific data in cosmetics, but widely used with no established safety concerns or widespread sensitization reports.

A plant extract valued for antioxidant and skin-conditioning properties, used in skincare formulations to support skin health. It has been used traditionally and in modern cosmetics with a reasonable safety history. Rarely, plant extracts can trigger sensitivities in individuals with tree pollen allergies.

A humectant that draws water into the skin. One of the best-studied, best-tolerated ingredients in personal care.

A crosslinked acrylic polymer that thickens and stabilizes formulations. Published assessments show it to be well tolerated at cosmetic use levels, with no evidence of penetration into viable skin layers or systemic absorption.

Used in tiny amounts to set a product to skin-friendly pH. No concern at those levels.

A strong alkali used in tiny amounts to adjust the pH of cosmetics to safe, skin-friendly levels. At the pH found in finished products, sodium hydroxide is neutralized and well tolerated.

A naturally occurring acid used to preserve and adjust pH in cosmetic formulas. It is generally recognized as safe at cosmetic use levels, with mild irritation possible on broken or very sensitive skin at higher concentrations.

A widely used, gentle preservative also common in food. It is generally well tolerated, though it can occasionally cause mild, transient irritation in people with already-compromised or very reactive skin.

A widely used preservative, safe at the legal limit of 1% or less. Often the "paraben-free" replacement.

An undisclosed scent blend that can contain dozens of components. The single most common cause of cosmetic contact allergy, and the blend is not itemized, so you cannot see what is in it.

Benzyl salicylate is a fragrance fixative that also absorbs some UV light. It is on the EU allergen disclosure list, but the evidence suggests it sensitizes fewer people than most other listed fragrance allergens.

A jasmine-like fragrance compound frequently used in soaps and lotions. It is one of the 26 EU-designated fragrance allergens, though studies suggest its sensitization potency is comparatively low relative to other listed allergens.

A citrus-scented fragrance component. Fine for most, but it oxidizes over time into a known contact allergen, so it must be labelled in the EU.

An ester component found in lavender and other botanical fragrances. It is one of the EU's named fragrance allergens due to documented contact sensitization in dermatitis patients, particularly after oxidation and degradation of the parent materials over time.