Acrylic acid is a synthetic building block for common thickeners and stabilizers, but it is rarely used directly in skincare due to potential irritation.
Irritation
moderate
Source
synthetic
Beauty ingredient research
Browse the review database to understand what an ingredient is, what it does in a beauty formula, when it is useful, and when it deserves caution across skincare, haircare, bodycare, makeup, and more.
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Reviewed ingredients
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Low-concern standouts
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Need usage caution
Acrylic acid is a synthetic building block for common thickeners and stabilizers, but it is rarely used directly in skincare due to potential irritation.
Irritation
moderate
Source
synthetic
Dibenzylidene Sorbitol is a synthetic thickener that helps create smooth, non-greasy gels, but it has limited skin benefits and may feel heavy on some skin types.
Irritation
low
Source
synthetic
A synthetic gelling agent that gives oil-based products a smooth, non-greasy texture, but is rarely used in water-based formulas.
Irritation
low
Source
synthetic
Lithium Stearate is a safe, synthetic thickener that helps give cosmetics a smooth, stable texture, but it offers no direct skin benefit.
Irritation
low
Source
synthetic
A synthetic thickener that gives creams and lotions a rich, velvety texture without clogging pores or irritating skin.
Irritation
low
Source
semi-synthetic
A gentle seaweed-derived thickener that helps create a smooth, spreadable texture, but research on its unique benefits is still limited.
Irritation
low
Source
semi-synthetic
Surfactant
Sodium Bis-Hydroxyethylglycinate Coco-Glucosides Crosspolymer
A mild, plant-derived cleansing polymer that helps create a rich lather while being gentle on skin.
Irritation
low
Source
semi-synthetic