Butylene glycol

* A glycol (type of alcohol) ether that comes in the form of a colorless liquid.

Functions:

Used as a solvent and viscuosity (thickness) decreasing agent in cosmetic products. It also functions as a mild humectant that helps the skin and hair retain moisture. It has also been shown to improve the freeze/thaw abilities of various solutions. It is greatly valued as a cosmetic ingredient because it's been proven to be gentle and non-irritating to the skin, even in higher concentrations. You can find in personal care products such as shampoo/conditioner, moisturizer, foundation, cleanser, eye cream and sunscreen.

Recommended Products w/ Butyline glycol:

Derma Radiant Ageless Eyes ($39), Murad Firm & Tone Cellulite Cream ($75), Neova Advanced Lift Eye Gelee