Dimethylmethoxy Chromanol

Dimethylmethoxy Chromanol (often marketed as Lipochroman/antioxidant) is typically used at low levels (~0.1–1%) to reduce oxidative stress and is not an exfoliating, pH-dependent, or inherently reactive active. Available safety/patch-test data and broad cosmetic use suggest a generally low irritation profile, but as a potent antioxidant in a solubilized delivery system it can still sting or trigger irritation in highly compromised or eczema-prone skin, so it should not be scored as “very gentle.” Safety Notes: Dimethylmethoxy Chromanol (commonly marketed as Lipochroman-6) is used at very low levels as a high-potency antioxidant in leave-on serums/creams, with commercial products often starting around 0.01–0.05% where it is part of an antioxidant blend. The highest consumer-available products are typically positioned as ‘concentrated’ antioxidant serums and reach about 0.5–1.0%, with 1% representing the upper end seen in OTC retail formulas due to cost, solubility/vehicle constraints (often anhydrous or solvent-assisted), and diminishing practical benefit above that level. It is uncommon in rinse-off products; when present, it is usually at the low end because wash-off contact time limits utility.