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Colourless gas used as a propellant in aerosol products. It is potentially harmful if inhaled.
Also known as rubbing alcohol, this type of alcohol is known to be drying/sensitising to skin when listed among the main ingredients in a formula.
Solvent and texture-enhancing ingredient that increases oxygen to skin, which may actually boost the presence of reactive oxygen species (ROS) in skin—the very thing antioxidants fight against.
A solvent and potential PFAS that is often used as part of an ingredient blend.
“Incidentals” refers to any ingredients in cosmetics that do not have an effect in the formula or on skin, most often due to the amounts of such ingredients being vanishingly low.
A form of water also known as "heavy water" that, due to its chemical composition, has a higher mass than regular water.
Also known as DBP, it is a common ingredient in nail polish and most synthetic fragrances sold today.
A synthetic, viscous alcohol that functions as a solvent.
Phthalates refers to a wide range of substances that are very different from one another.
Most often used instead of various silicones and mineral oil, this hydrocarbon solvent has emollient properties with a light, silky finish.
This is the most widely used ingredient in skin care, often appearing first in product ingredient lists. Used as a solvent.
Filtered water used in cosmetics. All water used in cosmetic formulations goes through this process to remove components that could interfere with a product's stability and performance.
Solvent used in skin care to help form consistent solutions. Can also assist in preserving and enhancing product texture.
Functions as a stabilizer and solvent in cosmetics.
Solvent that can be used to enhance the absorption of other ingredients into skin for improved efficacy. Also provides hydrating properties.
Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.
Necessary to improve a formula's texture, stability, or penetration.
Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.
There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.
May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.
We couldn't find this in our ingredient dictionary. We log all missing ingredients and make continuous updates.
We have not yet rated this ingredient because we have not had a chance to review the research on it.