Description - Organic multi-purpose alcohol (synonym: 1,3-butanediol) used as humectant, solvent, antimicrobial agent and emollient. Offers characteristics such as preventing the assimilation of water from atmospheres of high humidity into film-forming preparations and preventing crystallization of insoluble components in cosmetic vehicles.
Benefits - 
Can be used across a wide range of leave-on and rinse-off formulations to add moisture and emolliency
Widely used as alternate solvent for glycerin or propylene glycol in water-based systems
Can stabilize volatile compounds such as fragrances and flavors fixing them in cosmetic formulations and to retard the loss of aroma
At a concentration of 8-10% butylene glycol has anti-microbial activity against bacteria, molds and yeasts
Enhances spreadability and smooth application.
Use - Incorporate into the water phase of formulations for seamless blending with other ingredients.. Typical use level 1 - 10%. For external use only.
Applications - Serums, creams & lotions, hair care products, color cosmetics.