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In formulas, it acts as a skin conditioning agent, emollient, and humectant that helps slow moisture loss from skin.

The Cosmetic Ingredient Review (CIR) Expert Panel has evaluated it and concluded it safe as used in cosmetics, citing low systemic toxicity, a long history of safe use, and low irritation/sensitization potential.

There's no mandatory maximum-use concentration and concentrations range from low single digits to 100%.

Soy is a common food allergen but cosmetic-grade Hydrogenated Soybean Oil is heavily refined. This means the proteins responsible for most soy allergic reactions are largely removed during that processing.

However, people with a known soy allergy should still patch test before use since trace protein residues can vary by manufacturing source.

Regular soybean oil (the non-hydrogenated version) has been rated as moderately comedogenic on the Fulton rabbit-ear scale; this rabbit-ear model is increasingly seen as a poor predictor of real-world human pore-clogging since it uses undiluted ingredients on rabbit ear skin rather than realistic concentrations on human skin.

Later studies also revealed inconsistent results when the rabbit ear model was applied to human skin.

This ingredient shows up on a lot of "pore-clogging" lists but there's no real evidence behind that. It doesn't even have a comedogenic rating from an actual study; the numbers you'll find online come from blogs citing other blogs.

Some people still find it breaks them out. So if that's you, definitely trust your skin.

Because this ingredient is a saturated triglyceride, it may not be fungal acne safe. This is because Malassezia breaks down sebum triglycerides into fatty acids it can consume, making this ingredient a possible source for the yeast.

The EU inventory of cosmetics has no use restrictions on this ingredient and it is considered well-tolerated.

This ingredient may not be fungal acne safe because it is derived from isostearic acid.

Safety-wise, the CIR Expert Panel has concluded it to be safe in cosmetics when formulated to be non-irritating and non-sensitizing.

Free stearic acid is a C18 fatty acid that the Malassezia yeast can substrate, so this ingredient may not be fungal acne safe.

This ingredient does have a comedogenic rating of 2-3, but this doesn't mean a formula with this ingredient will clog pores.

Human testing has proved that any finished product with this ingredient won't automatically make you break out; it really comes down to concentration, formula, and your skin.

Zinc Stearate is hydrophobic and repels water.

This ingredient can be sourced from non-animal or animal sources. It is best to reach out to the brand to see where they source this ingredient from.