Dipotassium phosphate is a potassium salt of phosphoric acid used in cosmetic formulations primarily as a buffering agent to stabilize and adjust pH. It can also act as a mild emulsifier or sequestrant in skincare products.
| Reported effect | How often | Notes |
|---|---|---|
Mild skin irritation | Rare | Generally well tolerated; occasional transient irritation reported, often related to overall formulation pH. |
Allergic contact dermatitis | Very rare | Isolated sensitization reports; not a common allergen. |
Eye irritation | Rare | Possible stinging or irritation on direct contact with eyes, particularly at higher concentrations. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.