Iodopropynyl Butylcarbamate (IPBC) is a broad-spectrum antimicrobial preservative used in cosmetics and personal care products primarily to protect against fungal and bacterial contamination. It is typically used at very low concentrations within regulatory limits.
| Reported effect | How often | Notes |
|---|---|---|
| Allergic contact dermatitis | Uncommon | Reported in patch-tested populations; IPBC is a recognized contact allergen. |
| Skin irritation | Uncommon | Redness, itching, or stinging at application sites, more likely in leave-on products. |
| Eyelid or facial dermatitis | Rare | Cases noted from cosmetics applied to delicate areas. |
| Concern over iodine content | Very rare | Theoretical concern regarding iodine release; clinical relevance considered low at permitted levels. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.