Butylene Glycol vs Propylene Glycol
Butylene Glycol and Propylene Glycol are both draws in moisture ingredients. Butylene Glycol is found in 787 products while Propylene Glycol appears in 455, making Butylene Glycol the more widely used option.
Butylene Glycol
Lightweight humectant and solvent
Propylene Glycol
Moisture-binding humectant and penetration enhancer