Salicylic Acid 2% Anhydrous Solution

A Water-free serum for gentle exfoliation and pore decongestion.

The Ordinary Salicylic Acid 2% Anhydrous Solution is a water-free product formulated to effectively decongest pores, and impart a superficial exfoliating effect. This will result in a visible reduction of textural irregularities, with improved skin tone homogeneity and clarity over time. Formulated in a squalane base formulated with the intent of reducing concerns of skin irritation that can be associated with the use of SA.

This solution offers fully solubilized (not suspended) SA, in an emollient, squalane-based vehicle, that is formulated with the intent of reducing concerns of skin irritation that can be associated with the use of SA.

Hydrous SA formulations rely on the formula’s pH for a delivery of the active, with an acidic pH increasing the availability of SA in its active form. This is because SA in aqueous solutions exists in two forms: active (free acid) form and ionized form. At a pH of 2.97 (corresponding to SA’s pKa value), half of the SA in solution will be ionised, and half will be in the active (free acid) form. Increasing the pH of the formulation will decrease the level of free acid, possibly impacting product efficacy. The anhydrous nature of this formula allows for the release of free-form, unionized acid, independent of pH.

This formulation is further supported by hydrating polyglycerides derived from sunflower oil, acting as lipophilic film-formers, which aim to slow the ingredient’s delivery to the skin, for controlled skin availability. Additionally, 4-t-butylcyclohexanol was included to help address signs of sensitivity or discomfort.