PPG-14 Butyl Ether

PPG-14 Butyl Ether is a glycol-ether emollient/solvent used to improve slip and solubilize oils, typically at low single-digit percentages in leave-on products. Glycol ethers are generally low-irritancy but can cause stinging or barrier disruption in reactive or eczematous skin, especially when combined with other solvents or surfactants in a routine. Given sensitive-skin and compromised-barrier populations, I rate it as mild with occasional sensitivity possible. Safety Notes: PPG-14 Butyl Ether is used in consumer skincare primarily as a lightweight emollient/solvent and slip agent; in many leave-on serums, lotions, and sunscreens it appears at trace-to-low levels (often ~0.05–1%) to improve spreadability and pigment/UV filter wetting. In real-world commercial products where it functions as a primary emollient/vehicle (e.g., silicone-free primers, body lotions, makeup-adjacent skincare, and some spray/oil-gel textures), it is commonly seen in the mid-single digits and can reach ~10–15% in high-slip, fast-drying leave-on formulations. Rinse-off products typically sit toward the low end because the sensorial benefit is less retained and formulas rely more on surfactant systems for primary structure.